Use of “global” keyword in Python

| | | | | | | | | | | |

👻 Check our latest review to choose the best laptop for Machine Learning engineers and Deep learning tasks!

What I understand from reading the documentation is that Python has a separate namespace for functions, and if I want to use a global variable in that function, I need to use global.

I"m using Python 2.7 and I tried this little test

>>> sub = ["0", "0", "0", "0"]
>>> def getJoin():
...     return ".".join(sub)
...
>>> getJoin()
"0.0.0.0"

It seems things are working fine even without global. I was able to access global variable without any problem.

Am I missing anything? Also, following is from Python documentation:

Names listed in a global statement must not be defined as formal parameters or in a for loop control target, class definition, function definition, or import statement.

While formal parameters and class definition make sense to me, I"m not able to understand the restriction on for loop control target and function definition.

👻 Read also: what is the best laptop for engineering students?

We hope this article has helped you to resolve the problem. Apart from Use of “global” keyword in Python, check other code Python module-related topics.

Want to excel in Python? See our review of the best Python online courses 2023. If you are interested in Data Science, check also how to learn programming in R.

By the way, this material is also available in other languages:



Chen Richtgofen

San Francisco | 2023-01-27

Maybe there are another answers? What Use of “global” keyword in Python exactly means?. I am just not quite sure it is the best method

Schneider Jackson

Abu Dhabi | 2023-01-27

Thanks for explaining! I was stuck with Use of “global” keyword in Python for some hours, finally got it done 🤗. I just hope that will not emerge anymore

Boris Jackson

Massachussetts | 2023-01-27

Thanks for explaining! I was stuck with Use of “global” keyword in Python for some hours, finally got it done 🤗. I just hope that will not emerge anymore

Shop

Gifts for programmers

Learn programming in R: courses

$FREE
Gifts for programmers

Best Python online courses for 2022

$FREE
Gifts for programmers

Best laptop for Fortnite

$399+
Gifts for programmers

Best laptop for Excel

$
Gifts for programmers

Best laptop for Solidworks

$399+
Gifts for programmers

Best laptop for Roblox

$399+
Gifts for programmers

Best computer for crypto mining

$499+
Gifts for programmers

Best laptop for Sims 4

$

Latest questions

PythonStackOverflow

Common xlabel/ylabel for matplotlib subplots

1947 answers

PythonStackOverflow

Check if one list is a subset of another in Python

1173 answers

PythonStackOverflow

How to specify multiple return types using type-hints

1002 answers

PythonStackOverflow

Printing words vertically in Python

909 answers

PythonStackOverflow

Python Extract words from a given string

798 answers

PythonStackOverflow

Why do I get "Pickle - EOFError: Ran out of input" reading an empty file?

606 answers

PythonStackOverflow

Python os.path.join () method

384 answers

PythonStackOverflow

Flake8: Ignore specific warning for entire file

360 answers

News


Wiki

Python | How to copy data from one Excel sheet to another

Common xlabel/ylabel for matplotlib subplots

Check if one list is a subset of another in Python

How to specify multiple return types using type-hints

Printing words vertically in Python

Python Extract words from a given string

Cyclic redundancy check in Python

Finding mean, median, mode in Python without libraries

Python add suffix / add prefix to strings in a list

Why do I get "Pickle - EOFError: Ran out of input" reading an empty file?

Python - Move item to the end of the list

Python - Print list vertically