noglobal 1.0.2

My python utility functions

noglobal

This python package provides the @noglobal decorator which prohibits the use of global variables from the function scope.

Install

pip install noglobal

Usage

from noglobal import NoGlobal
noglobal = NoGlobal(globals()).noglobal

bar = 10
@noglobal
def foo():
    print(bar)
foo()

NameError                                 Traceback (most recent call last)
Input In [4], in <cell line: 5>()
      2 @noglobal
      3 def foo():
      4     print(bar)
----> 5 foo()

Input In [4], in foo()
      2 @noglobal
      3 def foo():
----> 4     print(bar)

NameError: name 'bar' is not defined

Note

Functions with the @noglobal decorator also disallow the explicit use of global variables. That is, if you update a variable bound by a global declaration within a function, the original global variable will not be affected. The following code prints 10 on the standard output.

bar = 10

@noglobal
def foo():
    global bar
    bar = 11
foo()
print(bar)

Attribution

Based on the source codes:

• originally posted in StackOverflow: (CC BY-SA 3.0)
  • skyking: https://stackoverflow.com/questions/31023060/disable-global-variable-lookup-in-python/31047259#31047259
  • Glenn Maynard: https://stackoverflow.com/questions/4858100/how-to-list-imported-modules/4858123#4858123
• later modified by
  • Axel Huebl: https://gist.github.com/ax3l/59d92c6e1edefcef85ac2540eb056da3
  • yoshipon: https://gist.github.com/yoshipon/3adba8cc5d7daac6c3256c9163f48920
  • raven38: https://gist.github.com/raven38/4e4c3c7a179283c441f575d6e375510c