Module string
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Module string

source code

A collection of string operations (most are no longer used).

Warning: most of the code you see here isn't normally used nowadays. Beginning with Python 1.6, many of these functions are implemented as methods on the standard string object. They used to be implemented by a built-in module called strop, but strop is now obsolete itself.

Public module variables:

whitespace -- a string containing all characters considered whitespace lowercase -- a string containing all characters considered lowercase letters uppercase -- a string containing all characters considered uppercase letters letters -- a string containing all characters considered letters digits -- a string containing all characters considered decimal digits hexdigits -- a string containing all characters considered hexadecimal digits octdigits -- a string containing all characters considered octal digits punctuation -- a string containing all characters considered punctuation printable -- a string containing all characters considered printable

Classes [hide private]
  Template
A string class for supporting $-substitutions.
  _TemplateMetaclass
  _multimap
Helper class for combining multiple mappings.
Functions [hide private]
 
atof(s)
Return the floating point number represented by the string s.
source code
 
atoi(s, base=...)
Return the integer represented by the string s in the given base, which defaults to 10.
source code
 
atol(s, base=...)
Return the long integer represented by the string s in the given base, which defaults to 10.
source code
 
capitalize(s)
Return a copy of the string s with only its first character capitalized.
source code
 
capwords(s, sep=None)
capwords(s, [sep]) -> string
source code
 
center(s, width, fillchar=...)
Return a center version of s, in a field of the specified width.
source code
 
count(s, sub, start=..., end=...)
Return the number of occurrences of substring sub in string s[start:end].
source code
 
expandtabs(s, tabsize=...)
Return a copy of the string s with all tab characters replaced by the appropriate number of spaces, depending on the current column, and the tabsize (default 8).
source code
 
find(s, sub, start=... , end=...)
Return the lowest index in s where substring sub is found, such that sub is contained within s[start,end].
source code
 
index(s, sub, start=... , end=...)
Like find but raises ValueError when the substring is not found.
source code
 
join(list, sep=...)
Return a string composed of the words in list, with intervening occurrences of sep.
source code
 
joinfields(list, sep=...)
Return a string composed of the words in list, with intervening occurrences of sep.
source code
 
ljust(s, width, fillchar=...)
Return a left-justified version of s, in a field of the specified width, padded with spaces as needed.
source code
 
lower(s)
Return a copy of the string s converted to lowercase.
source code
 
lstrip(s, chars=...)
Return a copy of the string s with leading whitespace removed.
source code
 
replace(s, old, new, maxsplit=-1)
replace (str, old, new[, maxsplit]) -> string
source code
 
rfind(s, sub, start=... , end=...)
Return the highest index in s where substring sub is found, such that sub is contained within s[start,end].
source code
 
rindex(s, sub, start=... , end=...)
Like rfind but raises ValueError when the substring is not found.
source code
 
rjust(s, width, fillchar=...)
Return a right-justified version of s, in a field of the specified width, padded with spaces as needed.
source code
 
rsplit(s, sep=... , maxsplit=...)
Return a list of the words in the string s, using sep as the delimiter string, starting at the end of the string and working to the front.
source code
 
rstrip(s, chars=...)
Return a copy of the string s with trailing whitespace removed.
source code
 
split(s, sep=... , maxsplit=...)
Return a list of the words in the string s, using sep as the delimiter string.
source code
 
splitfields(s, sep=... , maxsplit=...)
Return a list of the words in the string s, using sep as the delimiter string.
source code
 
strip(s, chars=...)
Return a copy of the string s with leading and trailing whitespace removed.
source code
 
swapcase(s)
Return a copy of the string s with upper case characters converted to lowercase and vice versa.
source code
 
translate(s, table, deletions=...)
Return a copy of the string s, where all characters occurring in the optional argument deletions are removed, and the remaining characters have been mapped through the given translation table, which must be a string of length 256.
source code
 
upper(s)
Return a copy of the string s converted to uppercase.
source code
 
zfill(x, width)
Pad a numeric string x with zeros on the left, to fill a field of the specified width.
source code
Variables [hide private]
  __allow_access_to_unprotected_subobjects__ = 1
  _idmap = '\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x...
  _idmapL = None
  ascii_letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRS...
  ascii_lowercase = 'abcdefghijklmnopqrstuvwxyz'
  ascii_uppercase = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
  digits = '0123456789'
  hexdigits = '0123456789abcdefABCDEF'
  letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
  lowercase = 'abcdefghijklmnopqrstuvwxyz'
  octdigits = '01234567'
  printable = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLM...
  punctuation = '!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~'
  uppercase = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
  whitespace = '\t\n\x0b\x0c\r '
Function Details [hide private]

atof(s)

source code 
Return the floating point number represented by the string s.
Returns:
float

atoi(s, base=...)

source code 
Return the integer represented by the string s in the given base, which defaults to 10. The string s must consist of one or more digits, possibly preceded by a sign. If base is 0, it is chosen from the leading characters of s, 0 for octal, 0x or 0X for hexadecimal. If base is 16, a preceding 0x or 0X is accepted.
Returns:
int

atol(s, base=...)

source code 
Return the long integer represented by the string s in the given base, which defaults to 10. The string s must consist of one or more digits, possibly preceded by a sign. If base is 0, it is chosen from the leading characters of s, 0 for octal, 0x or 0X for hexadecimal. If base is 16, a preceding 0x or 0X is accepted. A trailing L or l is not accepted, unless base is 0.
Returns:
long

capitalize(s)

source code 
Return a copy of the string s with only its first character capitalized.
Returns:
string

capwords(s, sep=None)

source code 

capwords(s, [sep]) -> string

Split the argument into words using split, capitalize each word using capitalize, and join the capitalized words using join. Note that this replaces runs of whitespace characters by a single space.

center(s, width, fillchar=...)

source code 
Return a center version of s, in a field of the specified width. padded with spaces as needed. The string is never truncated. If specified the fillchar is used instead of spaces.
Returns:
string

count(s, sub, start=..., end=...)

source code 
Return the number of occurrences of substring sub in string s[start:end]. Optional arguments start and end are interpreted as in slice notation.
Returns:
int

expandtabs(s, tabsize=...)

source code 
Return a copy of the string s with all tab characters replaced by the appropriate number of spaces, depending on the current column, and the tabsize (default 8).
Returns:
string

find(s, sub, start=... , end=...)

source code 

Return the lowest index in s where substring sub is found, such that sub is contained within s[start,end]. Optional arguments start and end are interpreted as in slice notation.

Return -1 on failure.
Returns:
in

index(s, sub, start=... , end=...)

source code 
Like find but raises ValueError when the substring is not found.
Returns:
int

join(list, sep=...)

source code 

Return a string composed of the words in list, with intervening occurrences of sep. The default separator is a single space.

(joinfields and join are synonymous)
Returns:
string

joinfields(list, sep=...)

source code 

Return a string composed of the words in list, with intervening occurrences of sep. The default separator is a single space.

(joinfields and join are synonymous)
Returns:
string

ljust(s, width, fillchar=...)

source code 
Return a left-justified version of s, in a field of the specified width, padded with spaces as needed. The string is never truncated. If specified the fillchar is used instead of spaces.
Returns:
string

lower(s)

source code 
Return a copy of the string s converted to lowercase.
Returns:
string

lstrip(s, chars=...)

source code 
Return a copy of the string s with leading whitespace removed. If chars is given and not None, remove characters in chars instead.
Returns:
string

replace(s, old, new, maxsplit=-1)

source code 

replace (str, old, new[, maxsplit]) -> string

Return a copy of string str with all occurrences of substring old replaced by new. If the optional argument maxsplit is given, only the first maxsplit occurrences are replaced.

rfind(s, sub, start=... , end=...)

source code 

Return the highest index in s where substring sub is found, such that sub is contained within s[start,end]. Optional arguments start and end are interpreted as in slice notation.

Return -1 on failure.
Returns:
int

rindex(s, sub, start=... , end=...)

source code 
Like rfind but raises ValueError when the substring is not found.
Returns:
int

rjust(s, width, fillchar=...)

source code 
Return a right-justified version of s, in a field of the specified width, padded with spaces as needed. The string is never truncated. If specified the fillchar is used instead of spaces.
Returns:
string

rsplit(s, sep=... , maxsplit=...)

source code 
Return a list of the words in the string s, using sep as the delimiter string, starting at the end of the string and working to the front. If maxsplit is given, at most maxsplit splits are done. If sep is not specified or is None, any whitespace string is a separator.
Returns:
list of strings

rstrip(s, chars=...)

source code 
Return a copy of the string s with trailing whitespace removed. If chars is given and not None, remove characters in chars instead.
Returns:
string

split(s, sep=... , maxsplit=...)

source code 

Return a list of the words in the string s, using sep as the delimiter string. If maxsplit is given, splits at no more than maxsplit places (resulting in at most maxsplit+1 words). If sep is not specified or is None, any whitespace string is a separator.

(split and splitfields are synonymous)
Returns:
list of strings

splitfields(s, sep=... , maxsplit=...)

source code 

Return a list of the words in the string s, using sep as the delimiter string. If maxsplit is given, splits at no more than maxsplit places (resulting in at most maxsplit+1 words). If sep is not specified or is None, any whitespace string is a separator.

(split and splitfields are synonymous)
Returns:
list of strings

strip(s, chars=...)

source code 
Return a copy of the string s with leading and trailing whitespace removed. If chars is given and not None, remove characters in chars instead. If chars is unicode, S will be converted to unicode before stripping.
Returns:
string

swapcase(s)

source code 
Return a copy of the string s with upper case characters converted to lowercase and vice versa.
Returns:
string

translate(s, table, deletions=...)

source code 
Return a copy of the string s, where all characters occurring in the optional argument deletions are removed, and the remaining characters have been mapped through the given translation table, which must be a string of length 256. The deletions argument is not allowed for Unicode strings.
Returns:
string

upper(s)

source code 
Return a copy of the string s converted to uppercase.
Returns:
string

zfill(x, width)

source code 
Pad a numeric string x with zeros on the left, to fill a field of the specified width. The string x is never truncated.
Returns:
string


Variables Details [hide private]

_idmap

Value:
'''\x00\x01\x02\x03\x04\x05\x06\x07\x08\t
\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\
\x1d\x1e\x1f !"#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWX\
YZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\x7f\x80\x81\x82\x83\x84\x85\x8\
6\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\\
x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa\
9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\\
xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xc\
...

ascii_letters

Value:
'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'

printable

Value:
'''0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%\
&\'()*+,-./:;<=>?@[\\]^_`{|}~ \t
\r\x0b\x0c'''