- }3 S$ k& I- i0 v3 U+ Y Str (bytes_or_buffer[, encoding[, errors]]) -> Str " k; m( [* _0 ?2 H; w" ~ 3 L* o6 X( D/ D8 s5 c0 D
从给定的对象创建一个新的字符串对象。如果编码或,则对象必须公开数据缓冲区1 G3 o" j- Z& C
将使用给定的编码和错误处理程序进行解码。! _( _# A4 U$ s, @7 K
. `+ m \. _3 }+ t" D1 B8 W
否则,返回object.__str__()的结果(如果已定义)或repr(对象)。 }( R) q7 X' z3 M
) L3 x9 I! x( n6 X 编码默认为sys.getdefaultencoding()。 8 N% V4 V1 G2 `, k4 f4 M # ]& c9 J2 u) ^$ m- f& Z% s Errors默认为'strict'。 0 \) @1 z( Z( ~* N """- j) g8 G" z/ m1 ^4 R8 a5 {
def capitalize(self, *args, **kwargs): # real signature unknown- R9 e0 R& W+ J
""" ; U: D, O: Y7 s/ a Return a capitalized version of the string.: ~+ a7 o) {% T) Z* ?: F! J! c
8 ^% g$ T: n- O
More specifically, make the first character have upper case and the rest lower 5 v. M& ^& |' s, O" ~& I( P case.& D7 C" V6 S- v. T
""") n1 L% ?: S' D( n" i+ B; q
pass) a3 O! o% z+ ^. f7 ~1 _3 e
: g8 }7 W! b7 I& b+ K def casefold(self, *args, **kwargs): # real signature unknown& w6 n9 W# w& S& |+ Y" O8 Q
""" Return a version of the string suitable for caseless comparisons. """. F6 H0 @- S r# c$ o+ Q$ `
pass ' u( B; `, \) s9 R0 [ 5 D7 F2 L7 X" Q/ ~( j def center(self, *args, **kwargs): # real signature unknown 1 x- W: g0 Q: j3 P """6 Y: \- {) E" l. ?
返回一个居中长度为width的字符串。% o9 Y6 B3 n, I4 {. z
+ W2 W( n9 y5 k* e 使用指定的填充字符(默认为空格)填充。 ; T+ F% q, k5 t/ c2 c" y; H+ D3 a """ & Z/ V5 x; u9 R" K pass- f( h; g1 H& j% w) w
4 @7 {/ B; M7 y" b( B% B
def count(self, sub, start=None, end=None): # real signature unknown; restored from __doc__ # {. |) K) m" ` D/ h q" |0 C. n """+ @. r7 z; E. @; C8 E+ {4 W6 }
S.count(sub[, start[, end]]) -> % K+ k u& z4 [9 G
m; p2 m8 x& Q$ S) a2 N M0 I' Q$ j
int .count(sub[, start[, end]]返回子字符串sub in不重叠出现的次数: _6 [! t) ]8 {8 `$ |. b: |
0 R( Z4 i" J# M5 M- o+ ^' H
字符串(开始:结束)。可选参数start和end是用切片表示法解释。/ p. ]6 L% _. |+ G& l& |
"""# t M+ [+ h# `* W
return 0 9 Q/ ~1 G2 n5 C/ _ b/ @% q2 x2 l. U( I
def encode(self, *args, **kwargs): # real signature unknown/ Z+ x# s. L; j! T. v3 P7 h( \
"""6 n' j5 c3 S& `' B+ t/ d
Encode the string using the codec registered for encoding." P7 ?( i9 b# x3 F
! J& e! n8 ?; o encoding3 m7 J& o' `& G0 }; M3 d
The encoding in which to encode the string.3 A. p( v; S: H! K! u& f
errors 3 ]# J: l' u1 g The error handling scheme to use for encoding errors./ @6 R' l' ]5 }: B j( ?
The default is 'strict' meaning that encoding errors raise a 5 T5 o* W' W; |) r UnicodeEncodeError. Other possible values are 'ignore', 'replace' and: | f; x- p3 ]- p4 c' {: a4 e
'xmlcharrefreplace' as well as any other name registered with 9 B# ?' O1 c( Q& ?6 M# @) j( a codecs.register_error that can handle UnicodeEncodeErrors. $ t* [& h8 n% d, W' Q( _0 u ; U3 X h' l+ K+ t" P) u, y 使用注册用于编码的编解码器对字符串进行编码。 3 j; _6 [) U% S+ s / i; [& B9 D5 V# x) t, V 编码 3 d$ @3 O9 _: \- ?: j2 f: l% N7 z 用于编码字符串的编码方式。 & k8 `' i1 W8 S, a8 X 错误- V0 T/ ? F3 d2 R% i
用于编码错误的错误处理方案。, P7 G6 T( R/ n% ~3 f
默认值是'strict',意味着编码错误会引发UnicodeEncodeError。( r! s" R5 J' e7 f9 |4 ?9 T0 `
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。# w/ @* h5 o( q: n
可以处理UnicodeEncodeErrors的register_error。 " t9 s8 K' d- Q% V( C """, f9 g1 d8 v4 O$ N% d5 C4 g3 v
pass 2 x* b1 ~( `6 v; G 4 N4 u, s5 U: \" Q$ Q. ] def endswith(self, suffix, start=None, end=None): # real signature unknown; restored from __doc__ 4 K3 }0 f1 f% d9 C! L """" t- c: b7 ^. S4 ^; K) v M$ G3 L
S.endswith(suffix[, start[, end]]) -> bool) S: N. n0 p' J9 M2 ?* j
7 l+ X7 g* T9 t% {
Return True if S ends with the specified suffix, False otherwise.$ h8 [( k# A; R( C9 }
With optional start, test S beginning at that position.$ A) g+ O2 b" r; j! B
With optional end, stop comparing S at that position.4 c5 l) v3 U/ Z( Y9 i4 S3 [
suffix can also be a tuple of strings to try. 8 A" ^6 o, B9 } """ / e* }& R' Q, b D0 _1 L6 g return False/ c6 d9 i0 Z8 b/ N! H4 p$ i' ?6 Z
, R/ }; g1 _" k) ^! c
def expandtabs(self, *args, **kwargs): # real signature unknown8 S' y9 U. c& k. h! S
""" 3 ?1 M! a/ M7 Y0 Z Return a copy where all tab characters are expanded using spaces. % V1 q0 i3 i& F* i4 `+ |8 T& I + [# V$ i r; z3 r n! [ If tabsize is not given, a tab size of 8 characters is assumed.2 h4 ]0 V# |" i8 f/ `
""" ) e( x$ m4 w9 ]! R8 }; M: Z# o' ` pass$ Q, `% Q" I. i1 S
( I5 _0 b9 y0 }! G
def find(self, sub, start=None, end=None): # real signature unknown; restored from __doc__ / n: m2 W0 ]9 M. K """ u& U# X4 W; | w" [
S.find(sub[, start[, end]]) -> int , A+ O; z2 [" T4 E7 i& V! r0 p + G4 y, O6 g6 }$ T9 d Return the lowest index in S where substring sub is found,, K8 {8 I2 l0 d8 I8 ] t3 e
such that sub is contained within S[start:end]. Optional ! W4 D* m, h* \/ d$ h! X arguments start and end are interpreted as in slice notation.% b" p2 u9 v: J# k% \; Y6 a
* q* T- S! y# q4 } Return -1 on failure./ N. |) @! d2 v3 }+ P$ K0 f
s, Q. y0 o$ F S.find(sub[, start[, end]]) -> int: J8 [9 b1 f1 c
& G) I1 Q0 `, G5 p 失败时返回-1。 / e/ ?0 f* M! F9 Z4 O) y ' R7 I# R9 X5 ]* U" ]: Q U5 Z- ^+ i """ + ` i" ^6 D& k: B2 w; r1 x3 Y/ }4 l return 02 \3 V* z* t8 K
$ t, g5 G; \2 `' l
def format(self, *args, **kwargs): # known special case of str.format( v/ ^! S; \( d3 q; h
""" ) M6 k: d- k ]7 P S.format(*args, **kwargs) -> str 5 K# p$ E! g0 Y& ]! X2 Q. s, {6 P* }# m5 x
Return a formatted version of S, using substitutions from args and kwargs., m% P* B. |0 E" I: h: i1 z7 K6 e
The substitutions are identified by braces ('{' and '}'). ) Y3 h2 v: p; K1 O5 E# q7 e1 | & D) d- E& d' E3 h6 H/ Z; ` S.format(*args, **kwargs) -> str" @5 n7 u+ z3 p5 g+ G+ N! _/ w
" X% ?7 r# h3 }; l) ~* M; n0 r' A 使用args和kwargs的替换,返回S的格式化版本。 + |; i) m5 F% _6 e$ g: ^ 替换由大括号('{'和'}')标识。 6 l9 f M2 S- T' O """9 r# R, L& h1 L6 B, n' r- Z
pass, C! X* }: I/ C. K2 _
( E v1 v0 j; q! J7 p
def format_map(self, mapping): # real signature unknown; restored from __doc__4 `7 i7 `7 L0 @6 U) d
""" ' f8 l$ n* U; [ S.format_map(mapping) -> str1 A1 I& K9 k. u, M2 d+ {* L
1 {9 \3 w' ?+ {) X" A Return a formatted version of S, using substitutions from mapping., ^1 r3 F0 c5 x% }8 E
The substitutions are identified by braces ('{' and '}').) f. b3 R) a: t, z& _! W2 h+ ?- F
"""& o4 N4 l" U3 ^% P
return "" 0 u3 w- m( B4 Q% z; | . k p: ?, L" U$ {# V' t def index(self, sub, start=None, end=None): # real signature unknown; restored from __doc__( U* p+ ?8 q) n6 W+ g' t
""" / w5 J! z! ^, p' k& |5 d S.index(sub[, start[, end]]) -> int2 |1 t+ t$ W& ` V3 a9 L
0 u7 r4 L% n) N
Return the lowest index in S where substring sub is found, 8 o) \0 m. o9 O' d- {) j such that sub is contained within S[start:end]. Optional $ B$ l1 l- m- @# G3 } arguments start and end are interpreted as in slice notation.' F+ ^+ s0 Y4 l0 X( ], E
1 l* }1 v) e4 N4 b Raises ValueError when the substring is not found. 3 D' ]: e, Z4 j1 \; s1 E ' K6 ?1 ^- \: V, I! ? S.index(sub[, start[, end]]) -> int . y: [5 U6 i1 S1 h$ Z! R
.index(sub[, start[, end]] % P0 t1 g/ F1 W# Z 4 v3 ]" ]$ I4 _1 ] l- l8 c4 K7 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。& T) D# |0 a+ E6 y5 N4 m& y
可选参数start和end被解释为切片表示法。 / A S% W4 A- e$ x' x) W1 B+ p , A }+ g5 p" V) S 当没有找到子字符串时引发ValueError。4 G3 U# k9 J f* m+ l& ~* l- C8 T) x4 _# m
"""3 f( ?: W) X t# q4 R. u
return 08 _) c# }+ z( k6 Z" V& z' V0 s3 R
& D5 [9 n% H- \3 G def isalnum(self, *args, **kwargs): # real signature unknown/ ~6 [) f. K" ]" Y' Z" i
"""6 L* Y. W/ N* W9 z! l! ]
Return True if the string is an alpha-numeric string, False otherwise. . h) e4 o6 l$ _" c" G i2 |! |2 K a$ n# |* h; @/ n- D. c' W, T
A string is alpha-numeric if all characters in the string are alpha-numeric and $ p4 I6 E: S4 A- e there is at least one character in the string.# ?) x2 o+ Z3 a+ a) Z1 q3 J
""" ) ^. s' r" v2 n* m! P$ H pass 2 C3 w2 w* L5 @/ T# Y. i" {* ~; d$ O8 j; G6 _
def isalpha(self, *args, **kwargs): # real signature unknown/ Z5 @& e; x2 D8 J$ R6 l9 A# q
""" + I8 Q: A) d9 E Return True if the string is an alphabetic string, False otherwise.6 ~5 [9 V3 Z; m4 r
0 o4 R ]; h: \! P- O$ g
A string is alphabetic if all characters in the string are alphabetic and there6 S% B. s0 G( v! J8 T8 M
is at least one character in the string. / ~# ?8 Y8 H1 [9 T( n) \% D """8 t6 ~0 J1 I, z% P% t
pass" u) e2 X, U) K/ y1 w% @
0 ~! l( H( @2 v( j( }# X5 w; o( e
def isascii(self, *args, **kwargs): # real signature unknown R) Z0 ~' C, A4 L
"""8 \; l8 t9 V1 D; J) }4 N
Return True if all characters in the string are ASCII, False otherwise.$ ?! }0 o' g% b8 B, q% k
6 k$ \1 g: S9 E5 ?& N) u4 ~7 Z& [0 J ASCII characters have code points in the range U+0000-U+007F. . ]) s, g4 F/ o" t; I, _/ z+ @ Empty string is ASCII too. 0 j: C ^% m+ W; A+ k """) C L9 b5 J2 h9 J, W6 Y: _ J2 V) A
pass ( F8 w4 n# H o; X# g7 h; B' W : E' i$ q, w+ P$ c def isdecimal(self, *args, **kwargs): # real signature unknown$ ~+ e t2 q- ~. t4 g; C
"""' p* `7 e- U4 `, J* ^* l! E
Return True if the string is a decimal string, False otherwise.: D; T g' ?# k( v/ s7 Q7 G0 J5 v& c4 L
+ p) P9 I$ k& p& p0 U
A string is a decimal string if all characters in the string are decimal and/ F5 a; W% _* D- ] k3 p
there is at least one character in the string.' i/ U1 u% j1 \& Z+ {8 a" s) Q
""" " h+ B5 w# g! M0 z; [. P+ H9 p3 w/ U pass2 a: b% s; d. P$ a+ e) v. a8 F
4 B/ X- @- T0 I
def isdigit(self, *args, **kwargs): # real signature unknown, ?. J- ~- y- q# ?6 s
""" : ^! y0 ?; f1 O, D7 ` Return True if the string is a digit string, False otherwise. . K4 ?- S3 F) r8 D7 b; \, k# O; N' p+ Z7 c {! E% G; L* u, L4 ~
A string is a digit string if all characters in the string are digits and there! k) C) U) ^7 f8 D) c. k
is at least one character in the string. 5 U H* U/ ^- h """$ F9 N) \; h* `' k- H/ l3 q( q
pass 5 }7 p6 c. u2 b$ z+ p; `; X2 V0 m! u8 f2 f- i' F' U! f% O
def isidentifier(self, *args, **kwargs): # real signature unknown/ y# q6 K0 Z/ S+ T8 a/ J# i
""" - l0 {1 M/ E2 Y, z v Return True if the string is a valid Python identifier, False otherwise.9 D6 E3 J/ I0 `1 z/ e7 f
0 Q- h, s' B: U+ Z Call keyword.iskeyword(s) to test whether string s is a reserved identifier,+ \1 j! d6 y1 x/ c! M
such as "def" or "class". 5 a; o3 j" `. ]1 O& Q, a """: H9 c" P& a- v$ B* u" M, ~! K
pass 0 o6 _7 V/ b6 I) ~/ Z2 y A& m" G1 A: s2 F; j def islower(self, *args, **kwargs): # real signature unknown 5 K. w2 O7 y4 x3 `+ m """; x% D5 b7 x9 A# }: L- G6 R' w" x8 x
Return True if the string is a lowercase string, False otherwise. & ^( s; T8 H. J- Q2 G6 b( ~7 h3 x9 r! R- n' ^- W. {- S
A string is lowercase if all cased characters in the string are lowercase and2 M$ }/ Q) H. S, o. e; L! Q# S
there is at least one cased character in the string.7 U: `" k4 P f" A ~
"""- R @7 W0 e* k
pass ; j3 X* j' r6 z/ W7 F& e6 a6 k' D& ?2 P( T7 c. G
def isnumeric(self, *args, **kwargs): # real signature unknown; y% I% v: g9 s6 N0 d2 _
""" : k3 f8 H _% C7 L" ?" }) `; D Return True if the string is a numeric string, False otherwise.2 F- y5 u S n( }" l/ H
0 X3 y& ^4 R+ b3 N' w( T
A string is numeric if all characters in the string are numeric and there is at ( Y3 k7 C8 `& N q& q least one character in the string. 4 l& {( A: Z1 `5 W& \# r, s """$ y5 S, u6 A1 _
pass# S) X. D: T2 ^4 X" J
+ Q$ X3 t# E* \" G" @
def isprintable(self, *args, **kwargs): # real signature unknown: v# H; m! V1 @
""" L3 }% @: h, S) J$ ^+ e
Return True if the string is printable, False otherwise.* K7 D5 n# c/ @5 O R8 Q
3 a/ H7 J% y; e" N# @
A string is printable if all of its characters are considered printable in# R: r9 O: R" b+ h0 W
repr() or if it is empty. 4 M7 T7 D) z) }5 t0 e2 k$ x: h6 M* |7 t """ * H' D% A6 w( L% V pass 3 c3 n$ u4 s+ a4 y3 j- i+ q7 R4 S2 ?8 x5 O) n d( u% `
def isspace(self, *args, **kwargs): # real signature unknown' P% W: d" i3 S
""" : D4 r% a8 N3 V( c9 W( ~* C5 P Return True if the string is a whitespace string, False otherwise.; W8 l$ M' u3 b) L1 s: N
: M$ A. u2 V7 w q6 b
A string is whitespace if all characters in the string are whitespace and there6 ]- H- F+ R7 K. C
is at least one character in the string. + q( ^- }! D0 f- m4 S """, M M/ J% ?1 H0 j: D! w
pass3 j- f& ?. B: T% K
1 Y( G7 m+ M% X7 g5 i" b
def istitle(self, *args, **kwargs): # real signature unknown $ W- j D' n5 f& o( P """- ~& c5 t/ o) p' @5 L+ A
Return True if the string is a title-cased string, False otherwise., C. z# h& Q1 l2 j: q
, o% I2 V4 t, W3 Y/ R
In a title-cased string, upper- and title-case characters may only ( c! m! f5 h% ~2 h" Y% t follow uncased characters and lowercase characters only cased ones. ! F5 X& B3 e9 b. S8 X """ % O7 a9 y9 x/ Y5 [4 \0 V4 e3 R pass4 u7 C8 ?2 F. p# ?+ Q3 e
, X" a/ R. p% }+ q$ F, l. n8 X% e
def isupper(self, *args, **kwargs): # real signature unknown 7 ]; f- n# J& O2 i """) ^4 I5 v* {0 K7 N
Return True if the string is an uppercase string, False otherwise. G* L/ S/ G8 j1 L
2 r2 Y) O+ I3 q; a5 E3 b A string is uppercase if all cased characters in the string are uppercase and 6 |/ F6 e$ ^2 q8 ?0 _- _( H7 B# _2 J there is at least one cased character in the string.6 f: {/ U- D" }' x& x7 ?
"""- q+ U; P/ E @* X# B6 X
pass # ?& v2 H! `+ I/ q; @1 L$ N0 B0 W" J6 ^6 W$ U0 a. ^. ?
def join(self, ab=None, pq=None, rs=None): # real signature unknown; restored from __doc__% z; L( o/ W/ o7 Y' m. a2 u8 [
""" ' c6 r8 q& K. U; @) y! K Concatenate any number of strings. # `7 M; r- |) o/ _$ h4 c& W 5 J Z- S" Y; p5 \% K3 r5 m; |) h The string whose method is called is inserted in between each given string.3 }) W* I% `- v0 l5 g$ _
The result is returned as a new string. 2 {0 U8 M8 T9 ]7 z( T, V7 X) Y0 t& ?. ]6 |
Example: '.'.join(['ab', 'pq', 'rs']) -> 'ab.pq.rs'# h0 N) S/ ^6 B' c! N: J1 I
8 Z4 h2 Q' y- B/ J 连接任意数量的字符串。8 I8 H. k6 S& \+ n$ P2 G' { t2 p
' a# e: I1 a4 q+ t, |4 H9 _, {# m
调用其方法的字符串被插入到每个给定字符串之间。 : k+ _! l7 i# n+ u% A/ m 结果以新字符串的形式返回。 0 r+ Z( R, r4 ~. m* L% P( i0 a " v0 d0 y. \. u) u) t( [
例如:“。”。Join (['ab', 'pq', 'rs']) -> 'ab.pq.rs' - I) l @( z+ @0 F8 t3 P """9 F: a2 H6 O' M) p1 x8 J# l" L
pass 3 @; s+ G) o4 } . u% W$ P; F5 c5 i- j8 M) u def ljust(self, *args, **kwargs): # real signature unknown! ^8 z: {% C7 e9 ~
"""7 D& O- c5 b! _( u, x' g
Return a left-justified string of length width. 5 t. f+ ]# S( q4 @6 _, S: j0 Z4 J; b1 X1 o" t
Padding is done using the specified fill character (default is a space).8 I5 Y% R" t# O9 i
- Z5 b2 b! ^$ Z" F. J' f, F1 R: U
返回长度为width的左对齐字符串。 ) w# j+ w7 `5 Y6 }4 p3 V0 n' ]' b' V3 ~ z% ~$ {( V
使用指定的填充字符(默认为空格)填充。 5 o5 c2 t" |3 T) t! g. ~# j: Z( H# c """ 5 b6 n/ y- Z' c6 h* x# M5 x* X pass5 X V3 ]( ~# |6 c* ^
1 |9 a8 @0 e' n N6 u' `' o
def lower(self, *args, **kwargs): # real signature unknown' w2 @6 U9 r$ g% c( m
""" Return a copy of the string converted to lowercase. . [- F! I7 [8 H0 b: O
返回转换为小写的字符串副本。""" * }$ k* |- [& R pass( L9 \3 k/ M# D r& j. R
+ P5 D% ]* R5 h/ q$ |! l
def lstrip(self, *args, **kwargs): # real signature unknown 9 g# K* v' T" G0 T """ " a: A ~: W$ j$ Z0 H7 b Return a copy of the string with leading whitespace removed. + s5 R* c) r; V5 f) v' I( ?* u0 [4 X+ ?2 y
If chars is given and not None, remove characters in chars instead.8 T( }- x6 R4 X, ~
7 s/ p0 m ~5 D w/ x6 v1 B 返回删除前导空格的字符串副本。 ' {; b" T* F9 P& |: x6 R" u$ M: Q9 F& a1 r- w$ x4 h
如果给出了chars而不是None,则删除chars中的字符。 & [7 [) e6 B: n" _ """ ; {; K! G0 E: _, c8 `; T pass/ p) h2 ]5 a7 \' o+ q' c
$ R1 B8 I) x( }" V- G5 t
def maketrans(self, *args, **kwargs): # real signature unknown' U) I0 Z( l% h; T8 h, j/ t
"""2 ]/ Z! c/ `3 \$ a% l
Return a translation table usable for str.translate().- G& P8 A) B( B9 _1 U( V2 P
9 J8 W/ H, {9 S+ M2 Q! }5 m
If there is only one argument, it must be a dictionary mapping Unicode # I7 s# _" P# M ordinals (integers) or characters to Unicode ordinals, strings or None. ! g! m8 T6 y' C1 V1 a Character keys will be then converted to ordinals. 5 |- ]2 D' S. t If there are two arguments, they must be strings of equal length, and - h3 e6 M8 i9 I0 v0 M4 k, U. N in the resulting dictionary, each character in x will be mapped to the % f- r6 k! ?1 s3 A0 N6 J; U9 z character at the same position in y. If there is a third argument, it ' _ p0 g7 t8 R7 m6 j must be a string, whose characters will be mapped to None in the result.# ]4 w0 j6 v2 M
""" 1 D' y+ E T/ U pass5 x+ e# I/ y$ M. M% B. Y) |
$ @! u% }- n( C; |' q def partition(self, *args, **kwargs): # real signature unknown 7 c9 Y; y: X1 }( K: }/ s6 |0 o. K """ X" I. u8 ~# t2 |! M
Partition the string into three parts using the given separator. K! |' {2 x) ^# m# O4 g2 {" u7 v1 q8 @/ R" K( g
This will search for the separator in the string. If the separator is found, . i4 A5 |. ~9 e8 r1 _' h returns a 3-tuple containing the part before the separator, the separator ) r( ~/ M+ a7 v$ Y2 D2 Z' E5 o itself, and the part after it. 8 d9 @9 o- L7 I! w# b 1 y( d% L) Q) k7 d, x If the separator is not found, returns a 3-tuple containing the original string 7 H7 O! p. c+ Y! Q9 U' b and two empty strings.* x1 F. F, M3 }! D- I5 y2 N0 u
""" 9 b8 x' h3 m1 G- L pass9 y% d+ B1 e" v' p
( V; Y8 R: t" N+ w. l p7 U
def replace(self, *args, **kwargs): # real signature unknown! ~" p+ l$ x2 D6 I Q3 Q" \
""" 5 `* C1 W% _# x$ v Return a copy with all occurrences of substring old replaced by new." A" Z: c$ v7 G& x4 s
9 @" \7 }) S" _5 }
count 5 s" c) j/ y( k Maximum number of occurrences to replace.7 W2 ?" K7 i# H h* a: m" r) z Y
-1 (the default value) means replace all occurrences. 1 v$ d5 s% ]$ M: H- T/ a+ \% t! E2 u. \8 O x! |
If the optional argument count is given, only the first count occurrences are g) Y$ d1 [6 P& o& ^ replaced. @/ X- @* ?- Y
- n0 S; t# D- [6 O* U, m7 X( b 返回一个副本,其中所有出现的子字符串old都被new替换。" a/ X9 \0 f; A0 \( r
; u- Y- L6 Z/ M3 L+ o2 @- w 数4 B2 Y: `8 H5 J8 c7 h3 I
替换的最大次数。 , w- b* g& G8 v/ L9 z -1(默认值)表示替换所有匹配项。 1 u# d' T5 ?9 }8 J; y/ C ' `3 V( d! F% d, M0 {# t 如果给出了可选参数count,则只出现第一个count更换。 ( J0 ?+ j, \3 R$ H, ^- f """' _* w% Z% h* D; W" a2 m
pass , `0 p ]8 P* R; U, ~ 0 t1 O) J& Z, [2 m! b, O def rfind(self, sub, start=None, end=None): # real signature unknown; restored from __doc__ ) g' H4 q# E# r$ W """" `7 `" `# H! `, y: | e
S.rfind(sub[, start[, end]]) -> int ) z+ V7 ]! L# t( I+ O- ^. ~, F ? ; y6 }- J) m# o+ J1 } Return the highest index in S where substring sub is found,& n7 G! {6 ]$ h- F
such that sub is contained within S[start:end]. Optional 2 @. s! J# l' R$ X3 W6 U5 ] arguments start and end are interpreted as in slice notation. 7 O4 p9 ?, x0 h0 v& z9 p0 E* R6 G' s7 _. q3 W9 y, _
Return -1 on failure. 8 W% _0 r9 |" G3 K* E6 I$ L """( k1 U' C: `9 v! l
return 0 ' j+ f$ F8 U5 R) m, O; K) A: a* N H1 p: L( _9 g
def rindex(self, sub, start=None, end=None): # real signature unknown; restored from __doc__ + {, K, n9 m' k$ c3 X0 R2 M3 W """ ' s% n: p3 O+ p( z) P S.rindex(sub[, start[, end]]) -> int6 @# H, ^) g2 L
9 R7 ~" K, s- c/ ^ Return the highest index in S where substring sub is found, 9 U6 e S# r3 C5 d2 d) i such that sub is contained within S[start:end]. Optional ' A9 }7 v+ X# N' g; J3 U arguments start and end are interpreted as in slice notation.' f: `) X4 l4 ?" I: V
. G. g" h6 b6 }5 p: _ Raises ValueError when the substring is not found./ |5 _6 }& f! K5 w! b& I8 R
""" 9 M% `3 K- B% l9 e7 o) A0 p* C return 0 2 T' w5 r4 n8 N" t6 `( V 4 O& X$ \* x; c$ v def rjust(self, *args, **kwargs): # real signature unknown 0 j9 D' q6 k2 X6 J9 E8 H# y W5 N """ ) r+ J& D" u4 }9 f+ ~ Return a right-justified string of length width. 5 c, F8 I6 L+ }1 q) L% B5 B4 A* y* }! d
Padding is done using the specified fill character (default is a space). c4 v# w* D& y+ o" E- h/ p/ B
, K% p: z$ R) k: m# v 返回长度为width的右对齐字符串。 ( u6 u0 D" C: z6 \ # E! p3 `- Y/ h' f+ F" F 使用指定的填充字符(默认为空格)填充。 % H# ~1 b+ ]% U) g5 T+ k/ M) @3 R' u """# \0 m$ L% s, s0 b: Q! V; _/ c# [5 b
pass) t7 D: P" I8 [8 a I
, q* \* E R8 g, m- F& i
def rpartition(self, *args, **kwargs): # real signature unknown$ X1 R- \0 T+ |) Z
"""8 g$ b6 `$ F7 b S, M$ G
Partition the string into three parts using the given separator.. s4 L" N& S! L) G5 A
) a0 n' H0 P1 {3 T/ V' N% o' m This will search for the separator in the string, starting at the end. If2 \7 B0 s1 V1 }" [) |0 X6 b' \* o
the separator is found, returns a 3-tuple containing the part before the N4 y: ^% S4 j; d+ L separator, the separator itself, and the part after it.0 J0 ]4 K" u7 I7 a+ u h& ~
# ~/ j2 n( @7 r' E. W If the separator is not found, returns a 3-tuple containing two empty strings/ Z9 p; O( v) ~3 J
and the original string. - P6 T# z7 S' z+ ]% B """ 2 Q) p0 f! f; q8 a; }2 d: q! j pass# F- c' ]4 j/ s+ e! m8 a0 t! a! Q
h; T0 H3 d# R: v8 N
def rsplit(self, *args, **kwargs): # real signature unknown ; o- k; D; a+ i8 O( ]7 i& w """ # ~0 Y) k- X& o6 M Return a list of the words in the string, using sep as the delimiter string. 8 g% K3 M: Q' O6 }! f1 ~ m! V$ b3 E 8 O# k, J4 ?. d sep 1 r4 H$ a* ^9 r. @& f The delimiter according which to split the string.! Y+ B1 S" p& a- h7 b% f! e) R& G
None (the default value) means split according to any whitespace, : h( L" L9 f$ U# q and discard empty strings from the result.* k7 V5 i2 ?4 e6 U' y, _* |" T
maxsplit" `8 E1 u8 z" v9 _; W) f
Maximum number of splits to do.' L& u/ B! \0 B5 b1 V! P( l0 j
-1 (the default value) means no limit. # D# _4 s" B6 F. m8 d# D; W 7 u- Q( q% k A3 b5 L Splits are done starting at the end of the string and working to the front. ; P2 c& |) i1 W2 f# R % \9 d6 M( m H2 V# W; ]- y 返回字符串中的单词列表,使用sep作为分隔符字符串。 + @% T( D) ~! m; ~- b# A, P sep 5 A$ X" J7 g4 Y 用来分割字符串的分隔符。) A# \$ o: H6 a) d& [
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。! a8 ]( A, O# H/ S7 H
" ~! n" A+ j5 V5 @1 t; \; n
maxsplit % l0 t! `* U# m1 ~2 A 最大分割次数。( o2 r0 J" `5 W! o. f
-1(默认值)表示无限制。 3 l3 [3 S: M5 H2 l / \* K0 {5 b0 H4 Y7 Y4 R1 ~
劈叉从绳子的末端开始,一直到前面。( P% w1 Z R' }! {# r( X4 i
""" / ]4 f4 V; `, H W0 {- h# c6 I pass; g% ?$ [. T3 U7 K3 I7 b( e4 Q0 T
; H5 c) l+ E* |8 Q
def rstrip(self, *args, **kwargs): # real signature unknown ( o: X+ A4 [3 N" ~* C \7 f7 Z """# C. y! ]1 ^4 f6 Y; A/ b
Return a copy of the string with trailing whitespace removed.' c1 Z- q: I# J. @7 f8 ]7 m; Y
' e4 U/ P; C J" s) d( C If chars is given and not None, remove characters in chars instead. % N8 C6 @4 W1 G( C" ~# X* A( n, T; b/ X5 F4 } m8 c4 L! I
返回字符串的副本,删除尾随空格。4 X& R$ y$ S( D) q! Z/ u
j5 v5 D, l5 N- y9 u7 r% p9 H) [
如果给出了chars而不是None,则删除chars中的字符。5 X; x' U$ G" L& u7 d9 G
""" * B" ^3 v1 i- D) A u pass 4 I7 @( E( f( \; j4 q* X( N1 `( @& o; I( j7 C/ W/ o
def split(self, *args, **kwargs): # real signature unknown $ _3 M/ ~/ v2 [: }) A """ % E; C- j% G2 O% v/ Q, M Return a list of the words in the string, using sep as the delimiter string. c# Y2 [ F) t2 ^
6 D! s7 [) z( Z" F% ~% Z7 _ sep+ T6 b4 t4 {. z* K3 |2 q
The delimiter according which to split the string.4 h; l+ i9 k0 c
None (the default value) means split according to any whitespace, - G0 G6 ~: m0 Y+ Z7 | and discard empty strings from the result.6 V1 w% b6 E, H6 P
maxsplit : c: ^" N2 y' Y# D, m1 b; T Maximum number of splits to do. % B$ q% L; I5 R* Y. b! [ -1 (the default value) means no limit. & W7 N$ ^1 V4 V1 X- Y+ J1 Z# R2 g """ ; J0 D& K# u4 R# Z2 R pass 5 o V6 [* h' J, \+ T . r( g* u: X* a& P5 m/ q def splitlines(self, *args, **kwargs): # real signature unknown 0 e; a3 P* r4 F% X7 f """! R6 m2 k# r7 I! |' K
Return a list of the lines in the string, breaking at line boundaries.6 r* Q3 L5 f1 z$ w' p
e) o" ?( B g2 y& V3 l Line breaks are not included in the resulting list unless keepends is given and / G2 _+ s3 m& \ t: z/ t3 G4 M true. 3 a/ w5 D0 n5 l """ - M; S+ e2 T+ X7 X+ K9 E( n pass 5 S6 n, e$ P+ p% R% t k( Q6 K+ j6 v " c) |, I+ N; d2 b$ J8 ~* V$ Y def startswith(self, prefix, start=None, end=None): # real signature unknown; restored from __doc__ # @7 U. g/ \3 Q+ i' e ~# { """, c+ e \& c" a8 ]& L c, n* t
S.startswith(prefix[, start[, end]]) -> bool 9 L2 k* G2 z& X9 o; p0 u ! M% c3 ?! W; ]3 i9 u. ]; v Return True if S starts with the specified prefix, False otherwise. # f& Q! n+ g* `' u With optional start, test S beginning at that position. 3 b) p: W* P0 q& v2 { With optional end, stop comparing S at that position. 6 q; f4 a. x- U6 j# v9 b" M& c prefix can also be a tuple of strings to try. 7 O! E" i. ^! Z Y+ j4 q- ^: B6 {1 ? """ B$ l, V0 w7 }( m
return False7 H# I" O Y9 E# r- f
5 c) H9 E. X' Q( ~ def strip(self, *args, **kwargs): # real signature unknown6 J9 ~. n4 ^: j4 [& e2 @
"""- ]4 U" p/ L5 V! M/ o1 h
Return a copy of the string with leading and trailing whitespace removed. 6 ?5 p& ~' J0 E6 E9 O# f/ J$ i" c. m6 y
If chars is given and not None, remove characters in chars instead.: Q l' Q+ N5 h% O" h
7 r# N: [3 i) C% {
返回删除前导和尾随空格的字符串副本。/ S7 L7 G, ~6 X& f
$ d% q+ D. }0 { I
如果给出了chars而不是None,则删除chars中的字符。 " ]; N/ y0 ~ S0 O9 C( u, w3 e q """ $ J) } \ R& u+ z4 I- E3 E0 A pass! g) f. i" |- C7 _! Z. n
1 i0 j" ~' c0 J: G
def swapcase(self, *args, **kwargs): # real signature unknown2 ?6 w. y/ g2 f; ?: P4 D
""" Convert uppercase characters to lowercase and lowercase characters to uppercase. """% j7 O$ A( m& y
pass; p% Y }2 b8 W; y/ _7 j
) R5 H4 A- f( V% ` def title(self, *args, **kwargs): # real signature unknown( I+ J* w- {# \8 ^# z5 @) r
""" ( y, _3 h) {* H& c# C" M Return a version of the string where each word is titlecased. 5 V/ N. i. b1 Z7 {; U1 Y1 v# a8 ^+ t$ g' L+ S) G( l
More specifically, words start with uppercased characters and all remaining; R6 O( J3 ~5 a& S% f! P
cased characters have lower case. ' ?* h) h% P1 r9 F """" Z$ h+ a" V$ y% Y! g0 b9 `* _& x
pass 0 a1 s* i% x1 C. j9 x& O 4 R; ~7 l8 w- {' Q( c def translate(self, *args, **kwargs): # real signature unknown$ q" Z O) C- w! f$ `
"""# W+ e4 e/ Y' s6 N9 A% T, K( u% L
Replace each character in the string using the given translation table. 2 a& M1 G8 i/ e8 p# R; y 3 m$ d3 p; e) s table4 K5 c5 {0 [- R) G* o
Translation table, which must be a mapping of Unicode ordinals to 2 ?7 Q3 ~. ?& v Unicode ordinals, strings, or None. 0 C, t/ E( o# `4 F( d" ~) x4 T4 O* m, l6 s6 `: s
The table must implement lookup/indexing via __getitem__, for instance a * W! G2 e# i. i! _" l2 H) X dictionary or list. If this operation raises LookupError, the character is 5 b, ? R* F/ c left untouched. Characters mapped to None are deleted.% V; x7 ?$ e% r5 {3 h
""" / H+ [2 x s5 g9 ?% C3 `8 ` pass( j! s( p4 z# j$ _; `
6 Y! q/ e5 Q* t$ b" ~
def upper(self, *args, **kwargs): # real signature unknown 6 L# V3 O# z( d0 N; F """ Return a copy of the string converted to uppercase. """ 9 }$ n# N; r5 ~) e pass 8 D. H9 @) b* p: { , p2 U: `3 G$ y- G8 `; ^ def zfill(self, *args, **kwargs): # real signature unknown- U. M; A) D% K! L& Q% m* i3 N
"""7 j3 b( h! a0 m3 \4 E4 \0 K
Pad a numeric string with zeros on the left, to fill a field of the given width. & O6 G. c& i- @+ @" [8 b: c9 T+ [2 c
The string is never truncated.0 m/ D7 @. R9 R) p3 v
""" 0 w! j6 b% [" R8 z pass # Z) M4 I( {- c3 `- I! M- L* y% ?) \
def __add__(self, *args, **kwargs): # real signature unknown# g9 b7 T# _, \& u0 j+ H( w
""" Return self+value. """5 b" c& h( E- R- \; Z& b
pass 0 Z( ^! W( j5 F% g. w+ ? 6 Y+ {4 s0 e T0 q+ G def __contains__(self, *args, **kwargs): # real signature unknown, P9 z: |! T e! i$ Y/ V% W
""" Return key in self. """ 6 `% J2 n6 i6 l6 X4 _ a pass" o4 I, e+ Z6 Q7 n" T; }2 {2 \
# M; \9 l/ z( ~. H% N# [/ G; B def __eq__(self, *args, **kwargs): # real signature unknown+ A5 s8 ^: W; U1 j8 l% J
""" Return self==value. """/ }7 h' l- ~1 L/ Z, I* B
pass, p6 h( C! w8 f" F
9 A# S0 U* j5 ]1 n0 x! f: P7 K1 Q def __format__(self, *args, **kwargs): # real signature unknown + o. Q; ]6 Z4 J( j' X """ Return a formatted version of the string as described by format_spec. """ + Y( {$ o# o% S. H# z: R6 ^ V pass0 ` H: ?( z) t; @5 ^
3 f3 s! G4 |) g& i
def __getattribute__(self, *args, **kwargs): # real signature unknown " Z% t2 J' m% }. {! g6 q& b9 ]7 R """ Return getattr(self, name). """ 2 h8 e0 e) A2 f0 B, Q( W pass " X4 v% }+ u+ [7 u' y/ g. r# u# k, B. D; c5 Q: ^. _
def __getitem__(self, *args, **kwargs): # real signature unknown ; o/ h( e" x+ h9 `: s4 e """ Return self[key]. """$ m6 O' z" z0 _: n H1 O/ s$ o
pass ! d, Y8 ^- n+ ^4 T / m- X8 f; R6 Y0 b def __getnewargs__(self, *args, **kwargs): # real signature unknown 5 ]) H+ P: U+ d4 n pass 9 P. Y/ N9 k. q* e ! {* J0 m. {0 W! f, M% w' P def __ge__(self, *args, **kwargs): # real signature unknown3 w& C* [. w3 i* A/ c
""" Return self>=value. """* ?: ~: G/ W# y2 H5 m, r+ l$ Z% K9 q
pass , I4 v, a7 B5 u/ ^/ T; O; u8 V c" B3 q5 j, X
def __gt__(self, *args, **kwargs): # real signature unknown 4 g S$ I. R& Q """ Return self>value. """ 7 ~4 K( Q2 u l' \* h' `2 O9 Y pass: \; m+ U1 g8 e0 s2 Y4 Q- Y
5 S4 ~' E, N; `& A2 {0 O* _
def __hash__(self, *args, **kwargs): # real signature unknown $ z$ l- J" `3 q! p """ Return hash(self). """ $ \ q$ }% V$ p/ I pass: D, b7 n _* G1 n- L
+ X/ h. _# ~: J, G% o2 T def __init__(self, value='', encoding=None, errors='strict'): # known special case of str.__init__0 A- D2 | ?* x% |0 [/ P0 S% }
""" ' f2 _: l. _" F str(object='') -> str2 |2 U2 l* v5 K+ r: U
str(bytes_or_buffer[, encoding[, errors]]) -> str 4 Q. a0 C, w4 D# d0 M4 k2 T$ y: G5 _2 ]9 Y
Create a new string object from the given object. If encoding or ; u7 K) @& F; I. _5 E errors is specified, then the object must expose a data buffer & A) P2 @7 `4 }/ V, l* H# ^7 \& d that will be decoded using the given encoding and error handler. 2 G) G9 T$ y# n2 u Otherwise, returns the result of object.__str__() (if defined) 2 b0 @9 N5 X" a% [# x, @3 X5 K; _ or repr(object).5 Q: J; f2 s" G( J! {- u" K2 M) J0 b2 s
encoding defaults to sys.getdefaultencoding().4 c8 x, c/ @4 E; f& _. ^+ n P
errors defaults to 'strict'. ; Q0 h( M' g& e( M! N4 m8 Z! H% p # (copied from class doc) d) h$ e: J( R3 z, A( p9 ` """2 g" P# a# g' H2 Y" s
pass! d7 `/ f' K, g5 M* u% R
4 [; O; _8 G4 s/ K+ Q; m def __iter__(self, *args, **kwargs): # real signature unknown- ]9 W+ S6 S" U" q1 C, e- d6 c
""" Implement iter(self). """ , z7 u- X; i: e" ?7 A% P: p pass, x) G; A0 v! J% ~( K. K
. C7 F$ R7 L, r% J" v3 o
def __len__(self, *args, **kwargs): # real signature unknown ! e1 H6 j8 R' G q """ Return len(self). """; j# N/ X- N7 a! l8 D Z ~6 n
pass 7 J0 M0 s3 b$ B4 r: T# O: v( L* l% P. p( T6 r8 `9 V# w
def __le__(self, *args, **kwargs): # real signature unknown 8 Z- u, m) c8 o: I7 B """ Return self<=value. """ . m4 i% S' I: U& y2 \5 E pass% b# p7 f" `' L3 L3 r& B' k2 a$ _. N
' h e" e V- {
def __lt__(self, *args, **kwargs): # real signature unknown! ]$ ?/ A/ w1 y; a7 j2 a- c
""" Return self<value. """$ K. Q1 E/ w& J( q- {; |9 \$ A
pass+ }# h! i) t+ K( K% e3 c
7 ?9 f: e" y7 Y( q" M" y- I# f
def __mod__(self, *args, **kwargs): # real signature unknown 9 v/ \3 H, }! }6 T$ g """ Return self%value. """ " R9 B- s5 [7 s+ O5 o$ _ d" m pass+ B/ d6 ]6 z! J! v
0 K% C/ u" J0 c" m( e9 c
def __mul__(self, *args, **kwargs): # real signature unknown $ S$ R k4 z$ B& A/ T """ Return self*value. """ : c) h9 N! I- {( A pass# x' _; ~$ A5 d
/ W; H9 t. H H- X/ O2 i6 n; R/ Z
@staticmethod # known case of __new__ 0 x% p* v( v; J def __new__(*args, **kwargs): # real signature unknown7 b8 s% D; y( o, Z( Q7 T
""" Create and return a new object. See help(type) for accurate signature. """0 Z: W, `7 I" W6 a2 H
pass " x3 s( f7 A5 W+ \/ X- |& F 3 Y$ w' D' ?3 [- m def __ne__(self, *args, **kwargs): # real signature unknown, s' C/ m# b3 i$ k
""" Return self!=value. """; j* _3 q+ P. t, E3 x# ^' U$ e, V
pass6 y" Q9 H- M6 X$ z) ~! F' k
2 A( @% Y5 x. _
def __repr__(self, *args, **kwargs): # real signature unknown; Q. `! p8 x2 z& ]
""" Return repr(self). """ & `* ~" A u% M1 G, R6 _ pass3 n7 c* J% j; T' I/ z& Q
2 n; v! J. J e& u- ~
def __rmod__(self, *args, **kwargs): # real signature unknown 1 s' r2 U# L6 {+ } """ Return value%self. """2 m X* t% E6 m
pass' G% A/ D( k3 a. h3 [
, {; C9 x- d6 t9 a6 H; l def __rmul__(self, *args, **kwargs): # real signature unknown! Z0 T1 P8 S, B9 t$ {$ I. L3 q
""" Return value*self. """ : q! ^8 X; t4 r- V9 C, M pass 0 D9 L3 e4 D+ P5 x: N! W9 R1 L1 j1 s& Y7 A9 |& `' e! v. w
def __sizeof__(self, *args, **kwargs): # real signature unknown) R1 _! O- F1 I$ o7 R- s( O C' Y* R( D/ V
""" Return the size of the string in memory, in bytes. """" V3 ` F- M. Y5 K M9 @. g! z
pass; H. S+ W8 b! r8 K/ _6 U
" c# b& O' B, G, |) F$ z9 z5 I def __str__(self, *args, **kwargs): # real signature unknown 0 M: F$ J8 L3 n) N' m+ g """ Return str(self). """ * c4 g; C& _. t a. ? pass 4 i8 v! h5 [8 b3 W 5 I3 d+ i5 [+ w3 \1 " B- o2 K$ i$ P+ t) J# q2. j+ {7 J m- s# F" b% j
3 6 z& `4 P! X, `% e5 F" d48 F% B' M4 s5 r7 Y5 x8 t% g8 l# C
5 1 h& S9 \; r( H* a# u) n* F) \69 |1 J2 r3 ]+ `5 p: A
7$ [2 `$ I/ P7 z4 y# E2 O4 l {
8 * H: j' U3 Y3 x9 ^9 8 j! g* w# {9 z! j5 K10 t5 Y0 Y2 W: K" k' l117 a1 O& [9 k. R Y/ c/ h" c& ]
12 T: {/ W, F7 e( ~- D7 l13 , o8 [* r1 Q( L" Q14 1 o! M6 s, ^5 X( i+ }+ _9 j15% a: }+ Y3 s' M" M" h0 M
16: N# ~$ S# Q; j7 S1 j. a
177 J1 Q6 G/ o0 @+ W
18 0 ?% I% g/ X& f3 O0 R& P19 $ |1 {( f; a% t5 \# }! l9 Y8 x20 ) H* s2 m, o& f21 # {. A" i) L% G& o# S/ o3 Y226 @5 {# l, }( h5 ]
230 `, f" k0 {# H) A, ?
24 & U$ G3 _) H+ @1 T6 P, ?25 + x* @2 N5 O/ F/ F/ M5 c263 q; h0 i+ b2 U$ j. A
27 4 ~7 G5 w* O0 e( }8 ?28 8 V( Z/ i) ~# U& B1 l+ [294 {3 N# D# P* K8 J
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37 5 X, w1 ]" ]( _, L8 O, w3 y! T" q( N5 A38" o+ p- q. P6 L; {0 C% x @, v
39 : [) M- o3 a/ [/ M40 , X- e1 l: o. {6 Z0 c3 S) z41# [; o0 U' l* K+ C* v
42 1 D2 c/ c U: h6 b6 }430 c, z: _# _* N1 G8 N6 E& f
44 - O* ~8 p3 J! }45' Z' d7 O1 y g. h3 ?
461 ?$ X, w5 d. u/ k
47/ x5 I+ w- H0 }0 J, [! t( P
486 ^9 A' a' n- z
49' L2 a& G& y5 {, Z) \' c! \3 k4 }
50/ e6 ]6 \9 U: x" V* R1 n. U: F
51! p6 M8 H _9 E+ D4 O5 y: u: e
52 8 e' g1 B& U |$ w53 ' }5 F6 M8 D- Q$ T546 S. q5 Z. f" z0 o8 }, a( s3 G
55 # u/ v9 X( O$ ~6 C' V# u/ i, j3 p0 y: K56' z+ C/ @" `0 l5 ~& z" v! U
57 3 l: a+ X4 B. E/ U* e, F1 A% q, J58% v. V1 P, l: g1 n; {
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1.字符串操作符/ j n. v6 x( _
操作符 描述. N+ c; ?! j+ m- N
+ x+y,连接两个字符串x和y, T; w2 h4 o; h
* x*n或n*x,复制n次字符串x * B1 j+ m. G5 P; fin x in s,如果x是s的字串,返回True,否则返回False 1 L c8 b' ^' O2 Q; p# t" Y3 h2.字符串处理函数8 |* v+ q; M! [' E/ B) r3 J$ ~
函数 描述 ( H% F$ O: s& o7 zlen(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 3 W, w! ~! l' n! v* c5 lstr(x) 返回任意类型x所对应的字符串形式 2 l! v+ }, n" v$ schar(x) 返回Unicode编码x对应的单字符- V5 G* L ~; E4 r
ord(x) 返回x表示的Unicode编码 $ B$ M, U( q* @" H7 Q8 a7 }* Rhex(x) 返回整数x对应十六进制的小写形式字符串$ Q. _( l. t1 ]3 d# M0 v
oct(x) 返回整数x对应八进制的小写形式字符串 6 w+ j6 t; x: d% u( H! P0 T3 R3.字符串处理方法 : i( N7 E& k( i; _: m方法 描述 9 x( f( n7 V" E2 ps.lower() 字符串s全部转为小写 ' X' v& [" U# Q, g1 cs.upper() 字符串s全部转为大写 & x7 q0 ]* G5 O( d" @! s) Zs.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 0 h% U" I* `9 ^, G# m$ q1 u4 {s.count(sub) 返回字串sub出现的次数 - O5 \/ n/ h+ H0 D4 k: Gs.replace(old, new) 返回字符串s的副本,所有old字串被替换为new 4 B. c6 O+ T, R% y. ns.center(width, fillchar) 字符串居中函数,fillchar参数可选 : b+ T; |( ?! S) i/ m+ @2 rs.strip(chars) 从字符串s中去掉咋其左侧和右侧chars中出现的字符* V0 ^6 E4 H0 P0 Y$ e$ P; h
s.join(iter) 将iter变量的每一个元素增加一个s字符串 ; \+ s2 {) ^+ b! c4.字符串的查询操作8 o5 i& L" x/ D c
方法名称 作用 & b, ^6 r: d' O6 sindex() 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4 L9 K7 D9 d* Z( z5 Q( U5 E7 y
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9 n& j! A1 Q7 k' r1 ^( B
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 # m/ D( a+ _6 I- k5 Yrfind() 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-13 j2 K* [5 l. e. L* a( [* M& U( z
''' + X8 d& c- G) Aindex()查找第一次出现的位置 抛异常# V! S7 x- a9 p% u
rindex()查找最后一次次出现的位置 抛异常9 r; f$ m' @' O& G/ C
3 r; B! I) X0 @, h3 d" X3 dfind()查找第一次出现的位置 不抛异常,返回值为-1 1 g; l) y+ [8 W8 Crfind()查找最后一次出现的位置 抛异常 # q6 j, z9 Z$ R5 w1 Y6 E1 I''') X1 @" ?5 B2 C/ |0 W9 m
s = 'hello,hello') ^' l7 i0 f4 g- r+ e
print(s.index('o'))# S& ?/ \' h; I, _- z
print(s.rindex('o')) / d/ X' _' [# N6 {8 t9 Gprint(s.find('lo'))4 f# k4 }- m! L7 D2 V
print(s.find('ui')) # -1 8 ~5 [4 `4 a* i8 g7 Q1 " I4 }9 B& r: Z' M2 H4 S! g; E5 @ B+ w3/ }5 G7 ~1 A( g) Q0 E8 ~
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) e8 n7 J( [0 ]# z; }& ]9 T J$ w5.字符串大小写转换操作 1 b/ @0 Y3 T8 m+ Y# ? l$ z方法 作用 % w6 F1 T1 q! N- e- q7 q( hupper() 把所有的字符串转换为大写字母 [/ T! Z5 P! t7 q
lower() 把所有的字符串转换为小写字母 - H* z' P" }4 R7 p9 B: \" Bswapcase() 将大写字符转换为小写字符,将小写字符转换为大写字符。 8 l( x, ?: H8 m# Tcapitalize() 使第一个字符为大写字母,其余字符为小写字母! X3 N9 Y* U$ o, p2 o
title() 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。 , L8 b: z2 {5 s: V+ A8 @8 u; H# 字符串的大小写转换 + Y1 L+ Z4 r+ @+ ^" {* q# 1.upper()把字符串中的所有字符转为大写 " ~' P9 B/ b% |* R5 `; d. X! k# 2.lower()把字符串中的所有字符都转换为小写3 Z% |. X& Y6 y/ U% s4 K1 I% M: V
# 3.swap case() 大转小,小转大0 Q4 X: E+ B; @0 t4 H* `' `
# 4.capitalize()把第一个字符转为大写,其余字符转为小写 5 ]; T m5 \) n2 L+ B8 ]8 J# 5.title()把字符串首字母转换为大写,把剩余的转换为小写 1 k4 {8 I4 n0 K9 t' H W! P, T4 G0 z. x# J1 ~. L3 I& h2 D3 c8 M
s = 'hellopython' 6 F4 G8 \0 S$ ?8 l% j! Qprint(s.upper()) # 转大写, A) j' B1 N) r. A
print(s.lower()) # 转换后id改变,会产生一个新的空间; t5 i) i0 K3 P$ y3 }8 F- D
print(s.swapcase())5 ^& v: A# \7 \" o% L+ ?( j# ^
print(s.capitalize()) 4 [0 c- \! V" X3 G" Oprint(s.title()). p9 Q5 W. M: d, p
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6.字符串内容对齐操作方法 / f; m$ [- [, M+ v' r方法 作用 " V# o [ E: L# y; F+ X n1 }center(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。! b9 w$ j+ e' W+ N
ljust(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。6 V3 ?. o5 A' g6 ?' @5 g
rjust(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。 . b) r2 O& y) x; B I3 tzfill('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。. F+ a' C R; D" k$ h
'''字符串的对其操作'''9 |# l* ~% @# A; Z" U8 }
# 1.center 居中对齐 7 |$ D& j+ r. }# N+ [# xs = 'hello,python' 6 l; d' q4 r! Wprint(s.center(100, '*'))' O3 V) v$ ]$ j2 S( U( s
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# 2.ljust 左对齐 % z2 z- W1 ]/ w0 d. `print(s.ljust(100, '*'))3 h: y$ h0 [* ~4 r& l, A! L' n
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# 3.rjust 右对齐 . ]: H0 m* o* ]# xprint(s.rjust(100, '*')) 7 i- s3 Y0 h0 E8 |, D& t) ] $ q! t7 x6 h+ l9 d( Z! X# 3.zfill 右对齐,左侧为0填充 : f0 X: c/ h7 i1 {5 C. Nprint(s.zfill(100))) L2 [" t) {" U
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