This module provides direct access to all ‘built-in’ identifiers
of Python; for example, builtins.open is the full name for the
built-in function open(). See Built-in Functions and Built-in
Constants for documentation. This module is not normally
accessed explicitly by most applications, but can be useful in
modules that provide objects with the same name as a built-in
value, but in which the built-in of that name is also needed.
For example, in a module that wants to implement an open()
function that wraps the built-in open(), this module can be used
directly: import builtins def open(path): f =
builtins.open(path, 'r') return UpperCaser(f) class UpperCaser:
'''Wrapper around a file that converts output to upper-case.'''
def __init__(self, f): self._f = f def read(self, count=-1):
return self._f.read(count).upper() # ... As an implementation
detail, most modules have the name __builtins__ made available
as part of their globals. The value of __builtins__ is normally
either this module or the value of this mo