The operator module exports a set of functions implemented in C
corresponding to the intrinsic operators of Python. For example,
operator.add(x, y) is equivalent to the expression x+y . The
function names are those used for special class methods; variants without
leading and trailing "__ " are also provided for convenience.
The operator module defines the following functions:
add a, b )
__add__ a, b )
Return a + b , for a and b numbers.
sub a, b )
__sub__ a, b )
Return a - b .
mul a, b )
__mul__ a, b )
Return a * b , for a and b numbers.
div a, b )
__div__ a, b )
Return a / b .
mod a, b )
__mod__ a, b )
Return a % b .
neg o )
__neg__ o )
Return o negated.
pos o )
__pos__ o )
Return o positive.
abs o )
__abs__ o )
Return the absolute value of o .
inv o )
__inv__ o )
Return the inverse of o .
lshift a, b )
__lshift__ a, b )
Return a shifted left by b .
rshift a, b )
__rshift__ a, b )
Return a shifted right by b .
and_ a, b )
__and__ a, b )
Return the bitwise and of a and b .
or_ a, b )
__or__ a, b )
Return the bitwise or of a and b .
xor a, b )
__xor__ a, b )
Return the bitwise exclusive or of a and b .
not_ o )
__not__ o )
Return the outcome of not o . (Note that there is no
__not__() discipline for object instances; only the
interpreter core defines this operation.)
truth o )
Return 1 if o is true, and 0 otherwise.
concat a, b )
__concat__ a, b )
Return a + b for a and b sequences.
repeat a, b )
__repeat__ a, b )
Return a * b where a is a sequence and
b is an integer.
contains a, b )
sequenceIncludes a, b )
Return the outcome of the test b in a .
Note the reversed operands.
countOf a, b )
Return the number of occurrences of b in a .
indexOf a, b )
Return the index of the first of occurrence of b in a .
getitem a, b )
__getitem__ a, b )
Return the value of a at index b .
setitem a, b, c )
__setitem__ a, b, c )
Set the value of a at index b to c .
delitem a, b )
__delitem__ a, b )
Remove the value of a at index b .
getslice a, b, c )
__getslice__ a, b, c )
Return the slice of a from index b to index c -1 .
setslice a, b, c, v )
__setslice__ a, b, c, v )
Set the slice of a from index b to index c -1 to the
sequence v .
delslice a, b, c )
__delslice__ a, b, c )
Delete the slice of a from index b to index c -1 .
Example: Build a dictionary that maps the ordinals from 0 to
256 to their character equivalents.
>>> import operator
>>> d = {}
>>> keys = range(256)
>>> vals = map(chr, keys)
>>> map(operator.setitem, [d]*len(keys), keys, vals)
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