5 X* s0 d4 B7 E: }. Y+ ^1 r3 d0 h Errors默认为'strict'。# z3 |/ J, D3 ?3 _: k
""" + x& [- f* J/ W' ?' \; ]4 f def capitalize(self, *args, **kwargs): # real signature unknown ( y$ N7 k3 [/ |' e' c; X- n/ u( ~ """! I$ z' H2 z% m& q2 a
Return a capitalized version of the string.! x7 `8 N0 w, H0 t7 ? y9 H$ a$ M+ r
0 _. s* u. n' m4 ]1 }5 w
More specifically, make the first character have upper case and the rest lower6 ~4 O0 O7 K0 M( ^/ x
case. / ~" r& n& X9 g, s- k """ $ Q3 v7 ~5 ~* f9 {& {. l5 d' K2 P pass# b! w; j) k5 O& J$ w
+ [" |5 Y8 E0 ~ Z- B3 J( x; \& s/ g def casefold(self, *args, **kwargs): # real signature unknown # ^% X/ |9 x) m$ e3 m2 C$ c- A """ Return a version of the string suitable for caseless comparisons. """ / s1 y' _' O4 V9 }, H u; ^5 ~ pass' \" x) I( t* {* n7 S% g
9 i! n+ p* v1 i+ x3 S def center(self, *args, **kwargs): # real signature unknown4 q% ]1 s) U c, o6 u
"""! i( N. p% ^2 a- a0 d
返回一个居中长度为width的字符串。# w: l2 z; q8 u+ a# C0 G
$ q d# |! n" {& z! W# P1 R( y
使用指定的填充字符(默认为空格)填充。 W& L1 U! Y- ~+ A" a$ v """8 i0 F8 `! K e( w* I
pass1 B# w: g5 ?) E2 K v% h/ r5 B
7 f; _- ], D2 _ def count(self, sub, start=None, end=None): # real signature unknown; restored from __doc__ p W7 X. u$ r """ W; B5 C* j" J/ T, u& V: R8 U S.count(sub[, start[, end]]) -> 3 ]1 ], m; ]2 p- a b) e
) m" e' q% v1 H4 P: i k
int .count(sub[, start[, end]]返回子字符串sub in不重叠出现的次数 + b+ O/ S a5 y8 o% y2 Y& x4 W" w8 a! I0 y8 c# u9 }$ I
字符串(开始:结束)。可选参数start和end是用切片表示法解释。( |( l1 ^0 U( y+ M% m4 X
""") a8 z" X( }2 j0 @( U7 u! ?
return 03 H- T s6 I$ A# _ T1 y( U, r
6 J4 l1 Q) K) H! U, ?" C- k def encode(self, *args, **kwargs): # real signature unknown/ [4 d2 W3 g/ c q' v2 `+ [9 k
""" ( e' m: {: J3 f/ P7 i Encode the string using the codec registered for encoding. ! s' } `8 X# u$ V2 v* ~7 W$ E3 a6 {! g9 I+ D' g# M& C: [7 ^; n
encoding& A% c" q [/ ~; d9 A8 U% @
The encoding in which to encode the string. # l* q/ F. y0 w, y9 c( h0 a errors7 W8 H2 z/ A' n2 x
The error handling scheme to use for encoding errors./ c8 c+ O/ U, R( |) }. ~4 V. P n. o
The default is 'strict' meaning that encoding errors raise a% K' x0 g) x! W8 x7 m7 F/ J
UnicodeEncodeError. Other possible values are 'ignore', 'replace' and' _6 N/ j* _) e! a z
'xmlcharrefreplace' as well as any other name registered with4 o! N6 T: C3 x6 ]4 i
codecs.register_error that can handle UnicodeEncodeErrors.6 M# f/ P- x3 O q. i
0 r6 M$ m4 h# d4 @3 e7 W9 f 使用注册用于编码的编解码器对字符串进行编码。 ' q- j+ C* D# q 4 v6 M O- |6 B" k }( j; r2 I 编码 3 k X" s# M/ L/ E5 n 用于编码字符串的编码方式。$ J/ i0 [1 }# m7 B' w' A3 L, J
错误 9 H) P7 `# G/ x/ i1 b$ G3 e' y' J 用于编码错误的错误处理方案。! K3 ?$ c1 D: R' S$ l' F9 T _' u
默认值是'strict',意味着编码错误会引发UnicodeEncodeError。5 t$ g* \, S9 P! E1 A( m# F$ N
其他可能的值有'ignore', 'replace'和'xmlcharrefreplace'以及注册的任何其他名称编解码器。 4 G j; D! y7 n: v. O: r9 I; u" ] 可以处理UnicodeEncodeErrors的register_error。/ [/ |8 Q$ m& x' G
"""3 |" d7 b5 c& r9 H# k: _
pass . {/ ? p3 R; [: c' r( r& U 9 v3 Y, z, L1 L. L+ W) O# |" O def endswith(self, suffix, start=None, end=None): # real signature unknown; restored from __doc__ 0 e( d+ x0 U7 Q- \( h8 V$ G: s3 O2 j """ 4 C) N# ]# E- d, _* v' E7 `: u. T* ` S.endswith(suffix[, start[, end]]) -> bool* q# l3 B% r# H% r3 [/ @
, M U% u3 ^! u
Return True if S ends with the specified suffix, False otherwise./ J5 B: o$ |% B ^8 Z& e
With optional start, test S beginning at that position.( H0 ?+ q* S! [3 y( L& Z1 B
With optional end, stop comparing S at that position.2 u1 E( L7 ~' ^2 g& v' b
suffix can also be a tuple of strings to try. ! \7 R4 p) G4 B0 ~# I: e' k+ u """; J2 _. Q/ J0 x' p7 t# \
return False 4 V" r" v1 t$ L0 b, {2 I 3 D, ^6 h- I( Z% {; X7 _ def expandtabs(self, *args, **kwargs): # real signature unknown $ S1 u4 u. o; k; u1 F$ `2 F """ 1 z% ^" m! D. d* a! G" a; R' Y+ F# b Return a copy where all tab characters are expanded using spaces. : @" m8 x" s ^; k2 }5 m9 C ( p3 k; \. `0 ~ w) f; ? If tabsize is not given, a tab size of 8 characters is assumed.; K1 e5 o$ ]- B. w# Y$ b# t/ p# H; ~
""" C s8 U4 m! L8 p) |2 J pass0 S4 r# j$ b* ^( _$ {
- t0 W1 Y7 [* B5 c) l def find(self, sub, start=None, end=None): # real signature unknown; restored from __doc__0 H1 E3 J' I0 L/ F; L8 U+ J( b6 O5 o, Q
""" r( Q4 C( _5 R
S.find(sub[, start[, end]]) -> int $ n1 V! D: I2 z# p: I * L+ ~# ^0 S& n& { Return the lowest index in S where substring sub is found, , x9 k; ]* T' A F0 M+ `: W- \ such that sub is contained within S[start:end]. Optional 3 X/ o. W6 I4 m4 \; y1 \: X arguments start and end are interpreted as in slice notation.: F0 K; j6 r' ?7 ^5 L, I. R
+ ~; I, T) _" h% V7 Z4 w3 [
Return -1 on failure.& Y/ M' t" r/ n) E
: b( h9 h; W# R3 z S.find(sub[, start[, end]]) -> int5 @' a* D' G( p* ]! H% E6 R. ~& a
! _/ o6 u$ {/ }: m& C2 g% K$ \
返回S中找到子串sub的最低下标,这样,sub包含在S[start:end]中。+ X. N2 k% R8 `# k( q$ q# L
可选参数start和end被解释为切片表示法。 / ?( m; X2 c9 Q ) X# W* w: d" C 失败时返回-1。- L8 ^; L, Q1 Y! E
+ U6 t9 n# w; V& |" ]% n
"""2 l, h% v+ Z9 S5 ~; X, y/ o
return 02 e- N7 Y0 r" X; t( i; k
- j6 t' _, |9 c9 m$ X def format(self, *args, **kwargs): # known special case of str.format & ^. u) [- R, S: I """, p1 u# L( ~; V+ y! o9 z: H) u
S.format(*args, **kwargs) -> str 9 T0 |! `0 U$ q6 P- u& ], k0 q n* L G# R% z: q1 W# y Return a formatted version of S, using substitutions from args and kwargs.9 |8 C( g! v3 N
The substitutions are identified by braces ('{' and '}'). , ~8 a) M* g% k0 B7 @8 h 8 n1 c5 s$ s" @ S.format(*args, **kwargs) -> str. e& X7 {( d. [
* e5 L3 J/ u2 P. W* {3 Z 使用args和kwargs的替换,返回S的格式化版本。* i- N5 N7 i( l+ |1 `) s, q) `
替换由大括号('{'和'}')标识。 % Q( e# t& t. } s% I a7 N """; s: k6 a! R+ ]+ V, n
pass, C. z b3 t9 ?+ Q
. Z; o$ e8 @; P7 O; V* R
def format_map(self, mapping): # real signature unknown; restored from __doc__ ( w' Y6 L( e9 g/ B3 [' L" b """ + v# w& Q# G- w3 p) D2 z S.format_map(mapping) -> str + q) O: L+ B, f/ ^: x , ]7 h2 P4 P% F7 U Return a formatted version of S, using substitutions from mapping.5 ^1 f+ T- G1 r8 U: M' ~: | B. R
The substitutions are identified by braces ('{' and '}'). 5 o' g1 k \( f2 | """1 U2 p2 |) x+ i8 P! a& }" u
return "" 4 B$ d0 T, z, o/ V6 |8 h. |' O1 t3 @/ E
def index(self, sub, start=None, end=None): # real signature unknown; restored from __doc__ 4 W9 `- {+ _$ v. h$ p7 A2 R: S """ . {9 [# X6 @( C# F8 z ~ S.index(sub[, start[, end]]) -> int3 G+ Q8 w* r4 b- `) G6 x
+ ?" I/ y! U8 V; N2 X o' w7 _ V; q
Return the lowest index in S where substring sub is found, , i2 t/ [0 m7 [7 G- k# A+ n2 Q such that sub is contained within S[start:end]. Optional ( {$ L- U1 N5 k3 m$ r" g/ j" U! R arguments start and end are interpreted as in slice notation.+ l; H4 L- C0 }) T
\: a+ {1 Z0 h5 D0 k! x) f% c6 m
Raises ValueError when the substring is not found. q3 ] a7 M' X Y P
2 T e3 E) @3 |: \3 y; D9 h
S.index(sub[, start[, end]]) -> int 0 e3 s, p1 h( ?, o) X/ v
.index(sub[, start[, end]]0 a) G: w3 A, [- D9 E. N8 j6 G
' g. ?( t) @: Y7 @1 I7 h 返回S中找到子串sub的最低下标,这样,sub包含在S[start:end]中。 1 ^& Q1 V( o+ z 可选参数start和end被解释为切片表示法。 4 L) `+ s2 F% `2 C) [ S ( \3 O# v9 p! ]" R3 z
当没有找到子字符串时引发ValueError。# g2 W4 x3 [7 M, Z0 d% j
""") N. p; ]' h6 l
return 0 ; M- M4 q4 t9 X. [2 | ; t" h! K5 D: [; V; A def isalnum(self, *args, **kwargs): # real signature unknown K2 v5 c2 p4 h. C* Q """# c8 K& \- v. j! P2 I
Return True if the string is an alpha-numeric string, False otherwise.0 D/ L# v, k8 o3 d
) Y5 _7 R& Y. S" I A string is alpha-numeric if all characters in the string are alpha-numeric and0 G: i9 f; z& A# s; p, _+ g/ y1 C3 }
there is at least one character in the string. . |- x$ c5 w3 V """! E/ I; j6 T0 p
pass + Q) C# L; I* G! U s . M4 C7 f* y& m def isalpha(self, *args, **kwargs): # real signature unknown ' H$ ^+ F+ B5 Q8 E& U4 J """6 @ j" G4 v7 }8 X: T: [
Return True if the string is an alphabetic string, False otherwise.! n2 ^3 M1 K' U: [4 Z( b
2 T6 T; A! f7 L) P- n( f A string is alphabetic if all characters in the string are alphabetic and there ( U3 c8 [" `& t+ y% D5 L is at least one character in the string.! Q7 }- z/ T. @, \
"""; ~" n5 v7 N1 N9 ?3 e: T0 w J$ E
pass# Q9 S& r' G# P( a e" C Y4 m$ m
) Y4 B: R5 ^( P0 E def isascii(self, *args, **kwargs): # real signature unknown( S" D) L- |3 p- ]& W- D
"""% m% n- U) Z" L( U
Return True if all characters in the string are ASCII, False otherwise.2 m7 F1 y/ ?+ Q' Q; d5 m$ P' @
# F5 J9 E2 ]: R/ p4 U% m ASCII characters have code points in the range U+0000-U+007F.- m2 B/ @7 @ z6 {% p1 ?
Empty string is ASCII too.$ |. t3 ~8 i4 o' Y- {" L
"""# u' Z+ N+ g0 Z. D4 O; D8 R
pass : f( E1 n9 r0 h) S' \5 W2 |9 n6 X0 F- p
def isdecimal(self, *args, **kwargs): # real signature unknown - P/ r+ K& s2 N( g) R* z" C0 I% [ """ ' i+ P) H8 R9 X9 E" [ Return True if the string is a decimal string, False otherwise.8 ]* @4 J+ e6 q7 x* Q
( V. z/ p1 {% f8 u% b
A string is a decimal string if all characters in the string are decimal and 1 b0 l* [# r& } there is at least one character in the string.1 \) _; e# M1 y0 O
"""7 z/ v4 K" y: V$ L. e
pass/ ~- P$ f/ K t4 N
5 S3 [( s; @1 Y9 k' O) I
def isdigit(self, *args, **kwargs): # real signature unknown* K$ L- }* u: D* t0 @
""" ! Q( B) d2 h0 o9 n0 a/ h Return True if the string is a digit string, False otherwise., U: @& d F: G9 |9 R) b
7 v- p8 @/ N5 ]* L A string is a digit string if all characters in the string are digits and there/ h9 Z7 p. @/ ]2 w7 q
is at least one character in the string.4 z3 @+ ]; U" ~7 U0 P; D3 q
""" , a3 i8 i/ J% _" Y1 T) T pass / z/ I' g" T4 [: Q9 z7 @* i+ R% Z' v: G5 \: [
def isidentifier(self, *args, **kwargs): # real signature unknown3 q2 z2 V5 `, g! e- i
""" $ U2 C" q+ D+ V- ~2 C' c/ r Return True if the string is a valid Python identifier, False otherwise.% L1 S9 s' \) t2 A2 ]/ A2 @
, ?+ i! d7 K( |1 w Call keyword.iskeyword(s) to test whether string s is a reserved identifier,+ v# }9 o1 q" T
such as "def" or "class". & M& B! j5 x$ B3 K* M """ . e- b& G( m# s B pass) b. U+ i+ q9 n4 X1 W# E
1 ]" ~5 w" k9 X7 n
def islower(self, *args, **kwargs): # real signature unknown - E3 M+ c+ w! g& O7 t """" D( x' }$ y6 { N! @0 a8 l" O
Return True if the string is a lowercase string, False otherwise.4 @* }0 q4 z1 b2 p o. h
9 W( `8 q4 ]. E$ d) U( X# o A string is lowercase if all cased characters in the string are lowercase and3 N9 z ~: R0 ^6 V$ P
there is at least one cased character in the string.0 n0 ^7 \: e& E* l1 y9 u1 l
""" 3 [% T% x8 d2 w pass6 D' q3 S; Y9 l) F9 v' h2 ^0 ]
l1 @" E% p4 h
def isnumeric(self, *args, **kwargs): # real signature unknown# m; f5 c& ?# V- w* Z t
""": N6 f/ ?6 H1 y- G. \) o# {3 N ]
Return True if the string is a numeric string, False otherwise. 8 D$ ~4 z% g; t) d p- z. c1 { `$ n# J9 J w8 s A string is numeric if all characters in the string are numeric and there is at d, ~' l4 E' r5 @2 l" E: H least one character in the string.: K# n( g1 Z9 M3 G0 {9 p
"""! ?% L- V, U7 ^9 w
pass 7 i( C7 j) e' Z- P ; m4 q4 |/ d+ W( H% n7 ]3 v def isprintable(self, *args, **kwargs): # real signature unknown - y! h: J9 z4 G7 H """ 8 k, Q/ ?. Q1 @4 e8 q Return True if the string is printable, False otherwise.4 z( g# d* t0 p/ g
+ U' N5 x0 `8 ]0 t* i/ d
A string is printable if all of its characters are considered printable in+ T7 m/ y; r& }0 p3 Z
repr() or if it is empty.: l) e" m& |8 a. A1 Q: }' [
""" 9 r2 A. ~* c4 m( t6 b/ i pass ! @ a/ Z$ R: f- ?$ y" X # H: ?( ?1 Z. z3 j/ { def isspace(self, *args, **kwargs): # real signature unknown! f1 \& K7 c+ `/ s8 v
""" 6 o$ e6 Y. K: \4 q" a. T3 e Return True if the string is a whitespace string, False otherwise.4 T7 p; U+ y6 M
) A& L) u" k$ q6 |) w A string is whitespace if all characters in the string are whitespace and there ' q; s3 ~7 @9 M$ u! G. p1 R* g is at least one character in the string.( v7 t! x' G* T$ U' p
"""7 u3 n6 F1 `+ G7 C( P$ t. v
pass 9 u, r- H& G; O * ]$ S+ N# E7 n def istitle(self, *args, **kwargs): # real signature unknown; k, ]& |3 g/ S5 ~6 I# ?( f+ V
"""9 B" v$ ]# ]4 b$ T
Return True if the string is a title-cased string, False otherwise. # p) T1 l2 w# L, J. @! G4 r7 y( e8 H/ w
In a title-cased string, upper- and title-case characters may only ! o$ p* K" d2 G' y, h+ O follow uncased characters and lowercase characters only cased ones.- ?( a$ O# W9 U) f5 j
""" 9 ~8 C' r" u1 L) t# J4 Z pass : w% P9 U: \! Y1 a + W2 ?' ]$ e( ?& |9 B9 o5 ~% o/ f def isupper(self, *args, **kwargs): # real signature unknown2 m8 B' m; r) S6 E8 c% p0 ]
""" 4 R5 Z+ h, Q3 {8 h% V( P, L0 w Return True if the string is an uppercase string, False otherwise.8 N2 D2 P; J/ m) R1 H" c* a
+ ~( _! r b. o8 S2 E. A
A string is uppercase if all cased characters in the string are uppercase and 4 F9 v4 e- E; V+ N1 D; V+ p there is at least one cased character in the string.0 x \6 g4 \* W) j. x
"""1 R' y6 ?+ D% o9 i6 H# r
pass + Q7 `1 X! T9 O' _2 i& P( r) B" h) b$ V6 }, U* e
def join(self, ab=None, pq=None, rs=None): # real signature unknown; restored from __doc__ ; i9 {; E) I* u4 f+ D. @! V; n """+ ^" p: P2 `; D4 F V, z
Concatenate any number of strings.: Z8 I" \2 G6 d
`2 K, ^8 P& N1 X# l The string whose method is called is inserted in between each given string. $ |# D) I+ W% P; f5 S; _; L The result is returned as a new string.' o5 z3 D: o$ j) \
; N* {+ O+ s# S' {
Example: '.'.join(['ab', 'pq', 'rs']) -> 'ab.pq.rs' 3 F6 o* ~. I3 o' g) d1 U3 c- A / O; _2 X1 |9 e/ t 连接任意数量的字符串。 ) J% ~# p* c" _ 5 t' m$ Q. w( I! b# I" {: | 调用其方法的字符串被插入到每个给定字符串之间。 + F. i4 ~) l) n( F: u 结果以新字符串的形式返回。 # A) _" S- |+ q! G: C4 N- v ) K! l. h8 l4 g: z0 A+ @( r
例如:“。”。Join (['ab', 'pq', 'rs']) -> 'ab.pq.rs' , o$ S$ d6 c/ N$ |7 o* Q) ? """1 [* t1 o, i8 ?% z/ P$ K
pass% J: [8 |! X' g+ D: Q7 D: H
* v: h3 W V% u H( q' X4 D! V5 o def ljust(self, *args, **kwargs): # real signature unknown' H9 x* n: R2 R0 r! C8 H1 \, C
""" * S5 T2 L/ @# z5 B: O7 D Return a left-justified string of length width. * T0 G% W3 `1 M8 F 7 ~/ G8 A+ H+ ~0 N Padding is done using the specified fill character (default is a space).% s' k6 l2 I# n$ V; e
; X7 W: H2 p. n1 K, F 返回长度为width的左对齐字符串。2 t3 _" v5 P/ o/ Y8 A# l' V
$ d, u e3 v: h( l 使用指定的填充字符(默认为空格)填充。, i- D" a* c( y' M, x8 U
""" 6 f' O1 F1 b, @) p1 x pass . A9 k* L# ~& f. q, }3 X: t1 f $ W1 H* o! N1 r. D# C7 p def lower(self, *args, **kwargs): # real signature unknown * z2 X$ ?3 C) e2 W# [ """ Return a copy of the string converted to lowercase. , d. W' `3 p2 s 返回转换为小写的字符串副本。""" 7 o3 P# ` _7 ]# q( ~9 N8 m9 ` pass& s* G6 l+ M y9 |* U0 W/ m& ]
9 e1 Y9 S$ o" a, b2 m5 g
def lstrip(self, *args, **kwargs): # real signature unknown - z+ V+ x p+ s """ ; ]0 V7 }& |$ x' D; q' U, D; M) J: W Return a copy of the string with leading whitespace removed. & q0 \$ y9 O% l' R$ m: G3 K8 k7 ?
If chars is given and not None, remove characters in chars instead." Q8 @' {/ M1 F `% ]* y
' o# M& J0 b8 |$ e- n, y 返回删除前导空格的字符串副本。0 E, ^) \1 Z" R' j9 `
) X+ E( z1 Q4 M8 q. X 如果给出了chars而不是None,则删除chars中的字符。( N" E) ]" h( m* @
""" / s5 }# W( p. u! t- t pass* E, J) A/ U; } }& i
! o' C, H0 k0 y+ u2 C def maketrans(self, *args, **kwargs): # real signature unknown: U: b5 p; B' W9 d8 H) N
""" ' ^% O' ^% Y2 ~% M7 b* r' D5 c; n0 c Return a translation table usable for str.translate(). 9 X1 s9 j) h/ |. l+ l 6 {' I+ L+ E. x! y# w; k If there is only one argument, it must be a dictionary mapping Unicode * a- Q3 \* W3 n' h, M ordinals (integers) or characters to Unicode ordinals, strings or None.( G( E& F" |/ K/ W! ^9 `
Character keys will be then converted to ordinals.9 Z- p6 O1 t5 Z7 h# W
If there are two arguments, they must be strings of equal length, and ) ?; }# M) n$ H in the resulting dictionary, each character in x will be mapped to the3 ]1 Z+ ~5 Z. h$ w0 b: `9 y
character at the same position in y. If there is a third argument, it v! i9 t1 G- G
must be a string, whose characters will be mapped to None in the result./ y+ O8 j; h8 h9 c$ X7 _: b
""" 2 t6 `( Q# N4 Q8 a- X pass 3 G7 G' h9 p# `% V# e% w! ^+ @) c; m8 \; r# ]5 L3 P2 [- k0 W
def partition(self, *args, **kwargs): # real signature unknown7 r* S0 ^2 A3 D& s
"""7 h$ s6 U1 D( V l$ m8 x( O
Partition the string into three parts using the given separator. ' w d2 h4 F4 U9 G' p/ G* h( v4 M' `5 ^6 E& T, p2 u
This will search for the separator in the string. If the separator is found,& i. ]3 Z/ C$ {/ q0 b
returns a 3-tuple containing the part before the separator, the separator 0 U7 w, G" z! r. {; ~6 `( ] itself, and the part after it. * m- y, L* ^6 f, K/ q7 ` - [$ v& O1 w) P* e- F0 C' E7 w If the separator is not found, returns a 3-tuple containing the original string ) i6 {4 Y4 q5 @- ~/ b* x9 E3 v2 s and two empty strings.2 x' K* Q- k" _) l
"""9 w. _2 m# H2 n
pass ( [$ x0 l2 W5 g! A' T# B ) J9 l- K, k# A def replace(self, *args, **kwargs): # real signature unknown ) h+ V$ s+ p- H K4 @: L6 }% A """7 D/ C, W9 i1 v( P( I [ Q) d2 O/ @
Return a copy with all occurrences of substring old replaced by new." K9 X! p! Q; F9 f& S! ]* H( y- J E3 W
! V( o4 E* p0 Q( z count ( U" x7 c; M+ ` Maximum number of occurrences to replace.3 P3 X- [5 G* {9 ^* N2 j; Q9 ]
-1 (the default value) means replace all occurrences. 3 x1 {+ Y8 y% Y4 V& v# m 9 F) i/ U" Y" _! q9 t; x If the optional argument count is given, only the first count occurrences are6 ^6 {: z( G s: F. M. F! g
replaced.% Y; H o* b$ E+ y' R5 J, D( }
& O" N+ o. E0 R: w% S3 U: t4 J
返回一个副本,其中所有出现的子字符串old都被new替换。 ; O( d7 [+ q- F+ n B4 G* U& R6 _2 W! O" |4 A1 J" a- s* }
数: t+ c: H1 Z4 r) \& U
替换的最大次数。 0 k7 D: z' q. G3 A/ s -1(默认值)表示替换所有匹配项。 " A5 L" ^/ I- b$ u' c 2 K$ Y" h- ~/ @# S( L
如果给出了可选参数count,则只出现第一个count更换。* y) @8 w/ [0 X- K( o8 ^
"""1 U+ o; S2 P, n# x" B
pass 0 X1 Y) K8 X, s8 s p0 y& z 5 D8 L& d; }+ B$ v def rfind(self, sub, start=None, end=None): # real signature unknown; restored from __doc__" n( ?; z) }) n8 E
"""" _8 }& x% B: _/ X2 D3 Y8 `
S.rfind(sub[, start[, end]]) -> int 8 @6 W2 ~; P. I' ]) q% |/ u/ V- h 1 _0 c" g) J: ^! c* g0 i; z Return the highest index in S where substring sub is found,* A7 ?" V- d4 q5 w+ l
such that sub is contained within S[start:end]. Optional 3 O7 m% C" a% N* z3 ? arguments start and end are interpreted as in slice notation. 3 _( O% W( a0 D: o$ \) d }% g1 M# W; h
Return -1 on failure., `! \: C' G6 r F% v& l
""" * o1 h9 H2 s, j/ q return 03 J# I% W8 O+ P7 r- a
/ j0 |& u0 H" u! l1 M7 X) p1 y
def rindex(self, sub, start=None, end=None): # real signature unknown; restored from __doc__ ( O2 f% ~/ F, J0 M. ^ """ ) Q8 U" \6 l, s& S& { S.rindex(sub[, start[, end]]) -> int; m+ L( j) i- j1 |+ p7 L" A
9 [) o5 Z" m* c5 Q) F; B' a
Return the highest index in S where substring sub is found, 8 H/ p% ]* U8 ^4 I4 i% L such that sub is contained within S[start:end]. Optional8 n2 ]/ m* r# E, b! o! g
arguments start and end are interpreted as in slice notation.! K) @) l" Q- C, g, H
8 k0 x8 }& p3 }9 J0 P& N Raises ValueError when the substring is not found. 9 G% d' X0 B( ~ """ 5 M$ d6 ~' _( y8 u4 i& L( @4 ~* I return 0 2 z& ]7 u, P# d$ J, C% b9 x2 G# n# ]7 X2 \) y
def rjust(self, *args, **kwargs): # real signature unknown2 }8 Z6 Q. `/ E' ]" P1 n
"""9 E2 q9 K) B# k/ ]) t3 a# ]
Return a right-justified string of length width. % g, _6 G% W' s8 R! f$ Z8 ?) ~+ U- | L2 h. F4 q$ J
Padding is done using the specified fill character (default is a space).0 o( l; U3 y8 U, [; R+ j4 Q
# v5 o4 {. [# A 返回长度为width的右对齐字符串。' E5 k) M" n: b8 p2 X
, B% S; T% V$ o4 K0 l, g
使用指定的填充字符(默认为空格)填充。4 o1 h4 x9 [2 ~4 t- V( ?" u) m1 n# X
""" 1 I! a4 K2 m5 P0 z/ f2 F2 W' \6 W9 ` pass % ~% ~1 q; Q; B4 U' \; H6 v4 y) x6 z" `0 c3 `. n
def rpartition(self, *args, **kwargs): # real signature unknown 6 ^. V; w! D. | """ _, j2 Z8 S1 \- y Partition the string into three parts using the given separator. ) ?* \4 l) E7 Q' W 2 I {( i% k% W s% [: M This will search for the separator in the string, starting at the end. If& z, @7 l' r. _/ B! K
the separator is found, returns a 3-tuple containing the part before the9 M0 S2 j5 K% U" B7 e X! @
separator, the separator itself, and the part after it. 1 V" C: M) T2 {) P+ ?2 L0 i4 y, i : ~1 V: z9 y3 U If the separator is not found, returns a 3-tuple containing two empty strings) t8 a G& h6 {# F2 f
and the original string.# |' x+ I7 `* @1 a+ j- K
""" 5 i0 v7 [+ r* X6 X* J pass : o8 ^# `* P# A( R$ E' Z1 V& D p7 P, A5 F# s7 a: B! x2 Z& t& M% D def rsplit(self, *args, **kwargs): # real signature unknown2 A7 R# R2 P# c) Y, b. g
"""6 X. \) ]# t% I' {4 o" s$ n
Return a list of the words in the string, using sep as the delimiter string. 8 b+ f; l# P. |; W4 S) p; \7 Q$ d7 o2 t! d6 [
sep$ v$ P8 p4 n. ^
The delimiter according which to split the string. 8 \# Y( P+ X4 V# G3 h+ E3 ~6 T/ P None (the default value) means split according to any whitespace,9 R6 L9 j5 m% F: b
and discard empty strings from the result. + r4 u6 s g' O) I0 U, e maxsplit " ]% Y! c9 t% m6 w+ [ Maximum number of splits to do. 4 P4 ~# z4 w" G- I -1 (the default value) means no limit. 2 g7 |3 ?8 Q+ i; @) k8 ?- m# X8 t& s% c6 g
Splits are done starting at the end of the string and working to the front. " m8 ?7 K* D# n" r4 W3 y% Q' B% ~4 }
返回字符串中的单词列表,使用sep作为分隔符字符串。9 q! n7 M, A1 k! \
sep& n9 E# B* M2 i6 \ u; y5 V: V
用来分割字符串的分隔符。 ; ^# n; o' K" O( y7 y None(默认值)表示根据任何空格进行分割,并从结果中丢弃空字符串。1 \) \( a$ L5 {) M. ?' g/ B& o
! }& V, x9 g' g6 c maxsplit / B' @/ B; d n# ? 最大分割次数。 m3 ~6 B. j8 u2 [1 g- b1 ~! d -1(默认值)表示无限制。+ y% i* B; Z3 R, m! b, a
3 T+ A" ]+ Z3 {1 o: ^. d: b% o
劈叉从绳子的末端开始,一直到前面。: L3 e0 I& m' w. }
""" 1 `' r- c: c6 P* w# d' ^ pass# u3 ?0 u, S5 l/ g
0 g2 L* Z1 A( \6 p2 v3 J
def rstrip(self, *args, **kwargs): # real signature unknown/ I1 H; U: n7 y6 H1 w
""", Y3 u! J0 a d" j' L8 X+ i
Return a copy of the string with trailing whitespace removed.1 T y6 F* _4 K! B1 ~$ e
: h9 Z8 J6 O$ ?3 S If chars is given and not None, remove characters in chars instead.8 Q, Z; ?. ^- \
& C- r1 i% f# S4 H2 M
返回字符串的副本,删除尾随空格。; n0 ?3 [* i, D2 _2 ^% W/ N
: ~- g$ z6 c( O1 L: [9 @, b, l# l
如果给出了chars而不是None,则删除chars中的字符。0 e; E& C& u$ _/ @2 p/ Q6 J
"""+ z* |8 L4 z B; G# G1 g' B
pass: I4 D1 |6 A+ e* t# \& Y" y+ b
- R2 h9 C8 G2 a6 K
def split(self, *args, **kwargs): # real signature unknown6 S) n; d, x% V
"""- A2 o/ d/ h7 o+ F" r g
Return a list of the words in the string, using sep as the delimiter string. $ B( S2 z& s: I% h1 i9 |$ o! y5 q) h* n; [
sep: R/ R" ?, ~5 m, a/ c" W# r. J" X5 i
The delimiter according which to split the string. 3 X5 a- n% V1 }/ q) I- d' | None (the default value) means split according to any whitespace, 7 r {0 B3 X7 w( _" \ and discard empty strings from the result.3 W5 p* N- g3 _1 _
maxsplit " M( x7 O3 k2 V Maximum number of splits to do. 2 c$ g8 I3 x. K) Q -1 (the default value) means no limit. 0 B+ Z) ]0 G& s# n5 n/ u& K """ 7 t$ }) ^$ U; m$ \8 E4 d pass% \+ \" o5 y5 ~7 b& e
1 i9 q; R; r0 `3 Y
def splitlines(self, *args, **kwargs): # real signature unknown 9 @. I1 W7 B, r7 `) x """/ C2 w" M- L$ G) C) P
Return a list of the lines in the string, breaking at line boundaries. # u4 o8 I, L7 p" J( w2 O0 S( d2 C, v! M! P1 r( U# ^/ u( G
Line breaks are not included in the resulting list unless keepends is given and3 O& x( U& Q+ d0 G! j) H" O
true.9 q4 d, k7 p1 b
""" 7 a7 U7 j* b' N7 J pass1 L" D7 T' o3 p/ X5 F
8 m: G$ O9 C: c( [) g, R
def startswith(self, prefix, start=None, end=None): # real signature unknown; restored from __doc__) [& U- ^1 z+ d; Q5 O8 c, ?5 {
""" * N, f( F+ E5 u S.startswith(prefix[, start[, end]]) -> bool- l2 D5 N# w$ c5 c2 G: U2 X
8 x) T% \& z( N8 D- W9 A- ?- ~6 W Return True if S starts with the specified prefix, False otherwise. 6 I+ O# s. i" N5 i x9 J" L With optional start, test S beginning at that position. 8 M; H* i) _( i% s; _4 [ With optional end, stop comparing S at that position. , V$ a: H9 u* o1 C8 P1 P7 z prefix can also be a tuple of strings to try. 0 P+ r/ c |& `/ O """ }" L8 Q S' p" y; h& V return False / g5 e6 A" o* M4 w ( X# V& f1 ^/ @# n' F5 W def strip(self, *args, **kwargs): # real signature unknown $ B# v9 W$ n% F' \ """0 }$ {/ ]6 ]" h- Z; x) X
Return a copy of the string with leading and trailing whitespace removed. ) P; H# V/ N$ E. i* F! ? 7 i! p- ~# [: `% i. H If chars is given and not None, remove characters in chars instead.- Y* T. g O4 t" ~9 B+ w
# T Z1 e3 J( D' ^ 返回删除前导和尾随空格的字符串副本。& A7 V' P _& P0 C( c a
" @" ?0 y8 n7 t# r5 o, Q9 ` 如果给出了chars而不是None,则删除chars中的字符。 0 K. w; s) m9 n/ u7 h6 K """ z% F% J$ }5 z' ?: e
pass ; }8 S. h- @" O3 P5 p/ w+ [9 `2 c1 y* F: b# W" X# X
def swapcase(self, *args, **kwargs): # real signature unknown0 ?2 h/ ^7 U( [+ p" S# T
""" Convert uppercase characters to lowercase and lowercase characters to uppercase. """ : ^3 ]( ?! j5 j& e) f pass ) ?% U% y$ j( c: U- X0 c+ @ # o% U" x; T% D def title(self, *args, **kwargs): # real signature unknown& Q; p5 b+ n U2 Q5 Q
""" ( C; [3 S8 t7 `9 R4 J1 K* h Return a version of the string where each word is titlecased. c+ A7 T# F* v1 x8 g" p. X% X# U2 C# Z
More specifically, words start with uppercased characters and all remaining0 `2 L2 F H8 V# f( u% |
cased characters have lower case. & U8 o% ~' M! o. W: n! m """ R8 t2 g7 c# J
pass 2 t0 A& p. F% K: s5 ~& V! d# G1 b9 W+ K3 Z( F( N# O; `
def translate(self, *args, **kwargs): # real signature unknown * A* Z: @; \* K. ]1 k- W- t% Y """' x( D M' _1 P3 x" J
Replace each character in the string using the given translation table. $ j0 H0 I& N# n! G% W6 C( @: t' N7 B; V+ p
table 6 I: ]& r; b4 H0 T9 H: Z4 ?6 p& m; ] Translation table, which must be a mapping of Unicode ordinals to / p3 H* W. o: j6 P! E1 O2 V8 _ Unicode ordinals, strings, or None.8 t3 U8 |: Z1 y. O
3 n# E3 M, T& M' P% _6 d
The table must implement lookup/indexing via __getitem__, for instance a ) _- r M2 V: c1 O dictionary or list. If this operation raises LookupError, the character is 1 X/ L; u7 z( A+ U4 o left untouched. Characters mapped to None are deleted.4 f6 z x, |$ U6 L" t6 D
""" ) c- g: L8 }: [* R pass 3 p; o# m' Y' p6 j% Q% y+ H + D1 v& U# A2 T! r8 X& u- J. L def upper(self, *args, **kwargs): # real signature unknown. |% N4 a. z9 J+ w) J" v. v
""" Return a copy of the string converted to uppercase. """6 O$ A3 z, Y) o0 x8 Z
pass0 G @% S1 B, W
- c0 L% h5 E$ ?1 h6 H5 ? def zfill(self, *args, **kwargs): # real signature unknown( B6 k4 m% s& \$ A2 Y6 x
""" ! E2 B0 d$ t! v/ E Pad a numeric string with zeros on the left, to fill a field of the given width.& H, ^$ j3 o9 m- Z- v6 Z
" J$ E$ W4 f3 d" E" O The string is never truncated.& g0 }3 @3 x k [) A6 b( {; e# @
""" ! i2 U1 N; F) A6 d* A( L3 ?" G pass 6 C+ K0 U1 t: s! x $ W" S) A% h, } d def __add__(self, *args, **kwargs): # real signature unknown 5 t2 G5 x$ S5 d """ Return self+value. """ 7 b5 `, h8 @+ T9 U0 R3 v pass ! u' H3 U1 @# \4 T- G* j/ | * Y6 V* r' [7 i9 x$ u [. W1 `4 X; u def __contains__(self, *args, **kwargs): # real signature unknown5 `" \0 K& N9 C# H
""" Return key in self. """# Z/ g& H: z5 `. `& p4 H+ Q
pass3 Y I2 ^& M9 _ a/ D) P B
1 q. E ?3 Y- R) p/ _) T def __eq__(self, *args, **kwargs): # real signature unknown - |# z# |5 u: ~& l* ^ """ Return self==value. """ 2 x7 f+ X: O, O pass5 A. M1 H/ J' p! Q2 r5 y
0 T6 ~; K* M% I! r* J# V5 G
def __format__(self, *args, **kwargs): # real signature unknown . q" C* r) ]2 h1 Q' `5 F+ ^+ g """ Return a formatted version of the string as described by format_spec. """, `' O0 ^# c) H6 J- L! T- Q
pass 9 [! q/ c' j. S" A9 k" i. R0 U & O+ i9 @2 ?8 \/ f6 ?+ l8 z8 y def __getattribute__(self, *args, **kwargs): # real signature unknown ( R( h6 C# a% ?! ] """ Return getattr(self, name). """7 y5 \/ K4 V% l7 @* J
pass6 i; h3 ?( Q/ g: a" V' V
3 q- d- Z% q3 t! s' R3 g- b: W
def __getitem__(self, *args, **kwargs): # real signature unknown$ m) ?) z0 }* {3 t/ A
""" Return self[key]. """ # D- T, u" g: Z6 ?# P# q9 v1 O pass9 ^3 q W" r/ O* s+ v# s4 |
- B( s5 `: c. X* q R def __getnewargs__(self, *args, **kwargs): # real signature unknown & S% \4 |) P( D pass / L) F g8 F" T! x0 D: G V9 U6 u# h: e+ m. n/ c& @# N# d
def __ge__(self, *args, **kwargs): # real signature unknown ! R* y1 N* b# Z \ """ Return self>=value. """ ; d4 y9 L* _" v) o* C3 p/ f6 H: O, ` pass9 `9 D6 t) a0 F. D7 t! w
8 g9 j1 h* t4 K- X0 T1 I7 p
def __gt__(self, *args, **kwargs): # real signature unknown 9 m- E& o" k2 { """ Return self>value. """ * L& `7 W: ]5 A8 m* ^: r* Z3 i7 O pass 9 c9 H4 l+ h6 D0 K0 x ; P8 b3 z/ l0 ?* |. { e def __hash__(self, *args, **kwargs): # real signature unknown ; h3 @- T$ k; k( _4 n1 E+ T """ Return hash(self). """ $ f$ Q- S" c7 q pass X4 r. G5 ?4 q8 U& Y 6 J, H2 z# e% ] def __init__(self, value='', encoding=None, errors='strict'): # known special case of str.__init__ . z6 i6 S' |- I- ~ """* }+ @/ d& I m; m% c
str(object='') -> str6 a9 Z4 O6 X- Q( T
str(bytes_or_buffer[, encoding[, errors]]) -> str 2 H# ~9 N8 \& @ T q3 E+ _* i" l0 j i$ e1 [5 k
Create a new string object from the given object. If encoding or - ~. F1 ~ D3 e+ t. P1 V errors is specified, then the object must expose a data buffer3 O* ?$ {7 o; }
that will be decoded using the given encoding and error handler.: }6 K1 s$ W/ ~/ W; ?7 }
Otherwise, returns the result of object.__str__() (if defined) 3 J" G( w. V( E% B, s or repr(object). & _9 R4 U% i! J- m! k encoding defaults to sys.getdefaultencoding().- q a6 g; b2 B
errors defaults to 'strict'. ' @6 b! t1 K$ i8 k # (copied from class doc) 5 V& `' F* b3 J( m+ R1 Z8 c """/ T0 Y, G; g2 ^: F
pass6 p) c7 i9 \8 P+ r
5 C2 u4 f4 `3 A def __iter__(self, *args, **kwargs): # real signature unknown# g p) n8 n" L j" y: r5 a
""" Implement iter(self). """9 h' J. O5 b5 T: u) @& I
pass/ |1 [- K' Y6 f* |0 ?$ u3 z4 S, H
* d- r" ?; E! X1 i
def __len__(self, *args, **kwargs): # real signature unknown ; C3 k4 y/ e$ L2 }9 M# w """ Return len(self). """6 b" U' b) d' ?
pass / K0 o0 o" Y1 j1 R( e6 v# V% R. i$ c+ j4 \" k$ C6 E' ]" B
def __le__(self, *args, **kwargs): # real signature unknown ) `0 h6 e6 c: V5 N' i8 x """ Return self<=value. """9 W L P: {3 J3 @! m
pass, z5 u' t& R2 V# q
* r, O, R# s" K3 u* h& q def __lt__(self, *args, **kwargs): # real signature unknown5 R" U2 ?& {9 F; z# |, C
""" Return self<value. """" C8 C) E4 f" K. I$ G: r
pass' g, J9 M* |5 o
; @2 ~/ ~7 ?+ A- U8 Y$ r1 b( [3 W6 L
def __mod__(self, *args, **kwargs): # real signature unknown , D. m; b# @' g! Y" y& c7 H """ Return self%value. """9 z/ z' }8 V" @6 p1 u
pass ( R: S+ I8 C# t* }" c! d # l' f2 t8 d: K9 ^$ o def __mul__(self, *args, **kwargs): # real signature unknown : O* o/ e! q' u6 G V4 ]. n """ Return self*value. """. {) @. O2 G3 X b2 ]3 m6 h
pass7 ~0 ~2 J: V2 _
$ m& l9 _+ @. E% O& f; u% w. D @staticmethod # known case of __new__ : s" K: p7 ]) E def __new__(*args, **kwargs): # real signature unknown/ B( v4 D) ?+ \& Q0 q
""" Create and return a new object. See help(type) for accurate signature. """ 7 J+ i1 T+ C8 l; F O$ J) s pass * e6 t" v+ @; ? : {2 k- A4 @+ Q: W( H def __ne__(self, *args, **kwargs): # real signature unknown2 P) {$ ]2 [ F3 |. Q
""" Return self!=value. """ ) I% s, K1 I- W; G0 i. T pass9 h; ^* a; e0 I
' }0 T* f+ R) i
def __repr__(self, *args, **kwargs): # real signature unknown , S, `- }6 d3 c0 e$ O """ Return repr(self). """9 j: ~- I0 Y5 [* o
pass) ^/ w8 p3 B, S I( A" i! G
7 ]" s' |+ n) j
def __rmod__(self, *args, **kwargs): # real signature unknown 8 K6 V) g1 G) [2 `# r4 `- F* y& R """ Return value%self. """0 q. ~9 ^8 z7 [: Q- M
pass1 `6 l1 j! U9 A3 a# [$ l
/ L7 X- m/ G% c" k$ O. G- F2 u def __rmul__(self, *args, **kwargs): # real signature unknown * M1 x; M* G9 | o. e """ Return value*self. """ ! G2 d; O5 N4 ~7 j: S6 k+ }& h pass& d2 Q7 A' K4 @) Y: x' ?* s1 T' z+ l- z
, x5 o, |$ t: y: | def __sizeof__(self, *args, **kwargs): # real signature unknown" J) H7 l7 L3 z0 k& \% s/ u
""" Return the size of the string in memory, in bytes. """) J2 y' D7 a* x) u g! y
pass' n; I1 H7 b3 d+ X6 L+ W# v
7 O7 h% j p/ R/ Q; m' U
def __str__(self, *args, **kwargs): # real signature unknown% {9 y9 r; \. i3 C1 g
""" Return str(self). """ 9 m2 B9 D$ g; @8 ]# _, `$ O pass 9 C# a4 f) p, F: ?, v ) W1 O1 q0 H0 m3 n3 j1 ~1 P* d6 t" J. N0 Q" E% f: z2 - n" ^8 J6 _1 _) c8 E1 w3) g# F# m/ ?5 }1 ^4 k8 F
40 }! x6 E! B- @, ~9 ]' q
5) F: L) t3 p& N! ]! l
67 m4 F7 Z2 y$ B3 V1 X
7 4 A% G- U- ?/ m, S" f8* W. Z1 r: q% U5 a' D
9$ [ W$ I+ T: F6 r7 X" b0 z" c
10; e7 a! B0 ~8 [, n, e' q
113 d/ m5 i* J- Q5 r$ m6 T
12 7 |, [; p. X/ V8 p" t13 & x4 S) {" G" J% ?1 \, N" |143 K1 Y$ O& B, ]) ]
157 m4 c8 s* z# Y) e; L
169 g; U- {% k1 I4 f" E, r% F) Q
17 2 \& ?, q9 V3 c4 T18$ l% x' Z* \/ o. i2 N
19 8 {2 A7 k) ]" ?! I6 r& y/ q/ f- l8 x200 B# @3 |3 ?9 E
21 ! _, s) h; q6 \$ l22# n& r- e! P1 W3 I6 m4 `
231 q7 h9 |9 E1 [( o
24' m1 c% K9 Q7 I( o: h
25 2 j) H0 o: j% \" j# P# e* B261 F# R$ G/ c& Y2 G* x+ t$ w: A
277 b* U1 f' ~ s6 z# j) s
28, U2 J+ o( ^7 F+ `0 B y: C
29 5 v/ u/ b) f# \8 Z30 8 b3 L4 P7 k4 n) I! u: x$ }+ X5 a8 m31+ f1 ~1 g' `0 i( {$ }1 x( r
32: i% H, C. {+ L. ~9 G* W
33 # E/ M% q, I+ w34 7 w! O- e$ E% e4 l35 4 O' J* M. q' N9 H369 _& s! w% H* w. ~
37. F4 |5 M$ [' {: k0 W
38 9 B- Q7 R0 v& S. ~4 {. W) w. q) |39 8 W: w1 q7 _) Q/ b$ a) D40 ( w6 O( |0 U' t$ q! }, T1 |+ v& r41 ! H1 S8 h) |% o. z" _42 9 z9 j2 n( N5 _& I% ^/ ?43 ; m1 c, T( r- F" ?3 f44' j7 P, T4 s. c& ^. l$ O0 S
45 7 L$ ^" v7 o3 Q/ o O, h; d$ d46 ( O0 v4 q* f% X47, Y9 Y+ ^2 X- L1 F" a
48( g* K3 a* |3 @( I0 E7 @! X& o9 G/ \
49 6 c) I/ L2 Y8 H50 x0 c2 x" x0 _51 4 O( J _1 e" u$ ]: r; @52 7 d2 {1 T* f7 q+ O% i3 s9 b53 # r) O j, v$ c0 F p( b54( H* {" v& [8 r I
55) k) r- n- P5 U
56 + q, f! n' [1 |% n4 h57 ' O) i6 O: L/ R ]8 y- }3 @58& \5 N2 U9 I0 ?3 @
59 1 C0 x- @! J4 |! u2 H600 s* A% ] n; |# F5 `
61 ' h8 S/ d( ~/ C# k62 % J0 j+ y7 B7 |: x' Z63 7 R9 e5 n7 n/ r) m8 A- g; v643 g1 c5 ?5 ~. P9 V. H0 ?
65 & u5 a" e$ s) t8 e9 _66, f ^. P; d' N1 c
67 ) W+ |& T4 B/ O: J9 r* \+ s682 a! F% x$ e$ X
69% p, j. l) z2 R2 P7 p
70 # m+ i+ l+ D) }; K71& q0 |5 _" @6 Q6 Q
729 m, J& S6 T2 A1 }/ E; ]
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597 2 ?( F! y0 i( N5 k. ?598 5 c, d) P# v; `( A1 o+ h599 ) @7 x/ E; J. m; d. d O0 y600 / z9 \, r! S: V6 I: g8 V1 G/ {$ J601 2 j/ C S/ e9 K602 / e7 Y* n" o0 \$ B603! d% ~4 { }; o+ O9 m& c6 R0 v" H
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636 / E# p% `; T/ ]/ i1 l" M4 i1.字符串操作符# T L" Y4 |. S1 y$ ]
操作符 描述1 P* y- t/ g) T
+ x+y,连接两个字符串x和y O% X7 V" ~( \
* x*n或n*x,复制n次字符串x& _0 u4 n& x* Z+ x
in x in s,如果x是s的字串,返回True,否则返回False6 o6 |: ^9 Y; f5 W7 Q
2.字符串处理函数+ Y. m) t4 e* _5 N6 ?7 X
函数 描述 % ?' d# `& a: R4 Z7 z6 g klen(x) 返回字符串x的长度,也可返回其它组合数据类型元素的个数 ; @+ l, \& F7 h$ E" r. q, i5 [0 [str(x) 返回任意类型x所对应的字符串形式 ( J* W( h. m& F+ z. V# o' I" c3 }char(x) 返回Unicode编码x对应的单字符1 t3 I. X. T. O- m6 ~3 R% z4 w
ord(x) 返回x表示的Unicode编码 ; r; t' H" p! Phex(x) 返回整数x对应十六进制的小写形式字符串 ! o) _: z; p" q- l7 b' ~oct(x) 返回整数x对应八进制的小写形式字符串 ; G/ R, |' Z7 d, D3.字符串处理方法, H* A) A4 s/ z2 h# n
方法 描述 . G; p* F! G& W0 Gs.lower() 字符串s全部转为小写. P9 {% u% i7 G6 ~+ T3 H
s.upper() 字符串s全部转为大写; U J3 Y# t6 }' x; c7 C5 G) L, B
s.split(sep=None) 返回一个列表,由s根据sep被分割的部分构成,省略sep默认以空格分割 3 r1 @/ w6 _3 P7 W# P% Is.count(sub) 返回字串sub出现的次数8 T: s( i5 `; j: ~. R
s.replace(old, new) 返回字符串s的副本,所有old字串被替换为new; W0 H" ~9 b% g
s.center(width, fillchar) 字符串居中函数,fillchar参数可选 # K( d4 W) E% L, I* ?. a. es.strip(chars) 从字符串s中去掉咋其左侧和右侧chars中出现的字符& Z5 E2 o4 D' Y
s.join(iter) 将iter变量的每一个元素增加一个s字符串 ; W7 f, R! M* M( j% U7 }4.字符串的查询操作 k% b0 l* n! I, V! w6 a. u I1 H方法名称 作用0 _ g x8 t" U% ]
index() 查找字串substr第一次出现的位置,如果查找的字串不存在,抛ValueError异常3 @4 K- m2 D1 d! d: w+ s
rindex() 查找字串substr最后一次出现的位置,如果查找的字串不存在,抛ValueError异常0 X8 C9 ]# v6 [& n* h
find() 查找字串substr第一次出现的位置,如果查找的字串不存在,返回-1: |& @& \) ]! h7 ]
rfind() 查找字串substr最后一次出现的位置,如果查找的字串不存在,返回-1% f, A$ B* ]1 o `4 v4 w) f/ b
''' 3 d/ g1 Q& O# Q7 N7 ~index()查找第一次出现的位置 抛异常- R. u: \6 @2 _# }5 ]
rindex()查找最后一次次出现的位置 抛异常2 i- Q4 r. _9 d5 @& u
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find()查找第一次出现的位置 不抛异常,返回值为-1 " f6 a0 S% y e' V2 c3 \rfind()查找最后一次出现的位置 抛异常* G7 I( o1 w7 s, ]# Z& y
''' * s6 [/ f# ]' f) G2 q- V! V- ps = 'hello,hello'1 p! m3 |! e3 m& e0 V
print(s.index('o')) ' @8 Q# Q9 W' rprint(s.rindex('o')) 8 ?2 R1 c' u5 F+ J+ V; ]print(s.find('lo'))' l$ Y$ L# |$ H8 Z; s% ]' z
print(s.find('ui')) # -1 2 j% X4 `+ f6 n; t13 K$ C: i- W/ T. r3 p. Z& L
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5.字符串大小写转换操作 : \, i' Y/ v+ C, \; l2 _2 v, Y方法 作用/ ], |. _3 l" ^# k; T
upper() 把所有的字符串转换为大写字母 1 R3 O, s: V9 R5 M! vlower() 把所有的字符串转换为小写字母- c) c, f9 G$ i
swapcase() 将大写字符转换为小写字符,将小写字符转换为大写字符。% d) k, T m5 U/ Q
capitalize() 使第一个字符为大写字母,其余字符为小写字母 6 \8 _% g- @) Q+ q4 i" wtitle() 返回字符串的一个版本,其中每个单词都有标题。更具体地说,单词以大写字母开头,其余都以大写字母开头区分大小写的字符小写。 . B( ?6 ]" [# W9 W' T+ u# 字符串的大小写转换 . S8 k; h4 {: i, S0 T4 s# 1.upper()把字符串中的所有字符转为大写 ( G3 G. x- O) U7 M$ g* W/ l# 2.lower()把字符串中的所有字符都转换为小写 / g- K# H' F+ J$ r7 u" E# 3.swap case() 大转小,小转大0 `! B5 [" d6 s& r" V
# 4.capitalize()把第一个字符转为大写,其余字符转为小写8 y3 @$ U7 A1 n2 `7 D' P
# 5.title()把字符串首字母转换为大写,把剩余的转换为小写 ) u5 P, w' B& O 7 J1 ~% D" ?$ @3 M- @4 a! xs = 'hellopython' / f+ F& f6 V- cprint(s.upper()) # 转大写 , d5 K1 l' @9 F! c. }& C$ x+ qprint(s.lower()) # 转换后id改变,会产生一个新的空间 " Y4 k5 ]4 x" c8 wprint(s.swapcase()) . Z' [$ T8 j: o: hprint(s.capitalize())6 v+ ~% I3 ?! Z5 D% S
print(s.title()) ; [% [" N9 p* x8 Q8 D' x/ l1 ! o9 f: a( E* d, E& \. O1 \ @9 X! _2 + [; `3 j3 O% {; J2 q k% Y3 b8 g) b) P( N8 `
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6.字符串内容对齐操作方法0 Q- i' K) Q6 a* G: f8 ~- @
方法 作用 7 |4 f7 O" j8 e# G. Icenter(width,'') 返回一个居中长度为width的字符串。使用指定的填充字符(默认为空格)填充。 6 b" O$ p% _) i* zljust(width,' ') 返回长度为width的左对齐字符串。使用指定的填充字符(默认为空格)填充。 * u& N3 C% m& Q9 Z6 w/ Brjust(width,' ') 返回长度为width的右对齐字符串。使用指定的填充字符(默认为空格)填充。 m& o- X! e$ K9 m% {- T5 Kzfill('int') 在左侧填充数字字符串,以填充给定宽度的字段。字符串永远不会被截断。( l& b$ [% B" @/ L' Q* w- L
'''字符串的对其操作''' 4 @ a8 S/ H& C4 D' N# 1.center 居中对齐 ' x5 g R+ }/ w, K, vs = 'hello,python' / A8 i0 ~, r4 w. H! d- o9 rprint(s.center(100, '*'))( e" b4 p& c C; e
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# 2.ljust 左对齐 + }6 O3 z9 O% M8 vprint(s.ljust(100, '*')) " m; k$ ]' d8 l( S) W: n ! }/ J+ l9 _! R( G. S6 v+ y1 a# 3.rjust 右对齐 9 v5 ?- p& w3 v) z+ |print(s.rjust(100, '*'))7 r# U* S" P* B6 t( u7 k8 Z, {
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# 3.zfill 右对齐,左侧为0填充 M( r7 J0 N( R, O7 `print(s.zfill(100)) 8 K! Q6 H% Y5 [/ i0 Y1 0 A* z- Q) j% g$ m26 ]2 E( n) K! W6 |# |
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