[Tut] How to Check ‘abc’ Package Version in Python?

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[Tut] How to Check ‘abc’ Package Version in Python? - xSicKxBot - 07-20-2022

How to Check ‘abc’ Package Version in Python?

5/5 – (2 votes)

In this article, I’ll show you:

How to check the version of the Python module (package, library)

Code:
abc

? And how to check if

Code:
abc

is installed anyways?

These are the eight best ways to check the installed version of the Python module

Code:
abc

Method 1:
Code:
pip show abc
Method 2:
Code:
pip list
Method 3:
Code:
pip list | findstr abc
Method 4:
Code:
library.__version__
Method 5:
Code:
importlib.metadata.version
Method 6:
Code:
conda list
Method 7:
Code:
pip freeze
Method 8:
Code:
pip freeze | grep abc

Before we go into these ways to check your

Code:
abc

version, let’s first quickly understand how versioning works in Python—you’ll be thankful to have spent a few seconds on this topic, believe me!

A Note on Python Version Numbering

Python versioning adds a unique identifier to different package versions using semantic versioning. Semantic versioning consists of three numerical units of versioning information in the format

Code:
major.minor.patch

In this tutorial, we’ll use the shorthand general version abbreviation like so:

Code:
x.y.z

Practical examples would use numerical values for

Code:
x

Code:
y

, and

Code:
z

Code:
1.2.3
Code:
4.1.4
Code:
1.0.0

This is shorthand for

Code:
major.minor.patch

Major releases (
Code:
0.1.0
to
Code:
1.0.0
) are used for the first stable release or “breaking changes”, i.e., major updates that break backward compatibility.
Minor releases (
Code:
0.1.0
to
Code:
0.2.0
) are used for larger bug fixes and new features that are backward compatible.
Patch releases (
Code:
0.1.0
to
Code:
0.1.1
) are used for smaller bug fixes that are backward compatible.

Let’s dive into the meat of this article:

Question: How to check the (major, minor, patch) version of

Code:
abc

in your current Python environment?

Method 1: pip show

To check which version of the Python library

Code:
abc

is installed, run

Code:
pip show abc

Code:
pip3 show abc

in your CMD/Powershell (Windows), or terminal (macOS/Linux/Ubuntu).

This will work if your pip installation is version 1.3 or higher—which is likely to hold in your case because pip 1.3 was released a decade ago in 2013!!

Here’s an example in my Windows Powershell: I’ve highlighted the line that shows that my package version is

Code:
a.b.c

Code:
PS C:\Users\xcent> pip show abc
Name: abc
Version: a.b.c
Summary: ...
Home-page: ...
Author: ...
Author-email: ...
License: ...
Location: ...
Requires: ...
Required-by: ...

In some instances, this will not work—depending on your environment. In this case, try those commands before giving up:

Code:
python -m pip show abc
python3 -m pip show abc
py -m pip show abc
pip3 show abc

Next, we’ll dive into more ways to check your

Code:
abc

version.

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Method 2: pip list

To check the versions of all installed packages, use

Code:
pip list

and locate the version of

Code:
abc

in the output list of package versions sorted alphabetically.

This will work if your pip installation is version 1.3 or higher.

Here’s a simplified example for Windows Powershell, I’ve highlighted the line that shows the package version is

Code:
1.2.3

Code:
PS C:\Users\xcent> pip list
Package Version
--------------- ---------
aaa 1.2.3
...
abc 1.2.3
...
zzz 1.2.3

In some instances, this will not work—depending on your environment. Then try those commands before giving up:

Code:
python -m pip list
python3 -m pip list
py -m pip list
pip3 list

Method 3: pip list + findstr on Windows

To check the versions of a single package on Windows, you can chain

Code:
pip list

with

Code:
findstr abc

using the CMD or Powershell command:

Code:
pip3 list | findstr abc

to locate the version of

Code:
abc

in the output list of package versions automatically.

Here’s an example for

Code:
abc

Code:
pip3 list | findstr abc 1.2.3

Method 4: Module __version__ Attribute

To check which version is installed of a given

Code:
library

, you can use the

Code:
library.__version__

attribute after importing the library (package, module) with

Code:
import library

.

Here’s the code:

Code:
import my_library
print(my_library.__version__)
# x.y.z for your version output

Here’s an excerpt from the PEP 8 docs mentioning the

Code:
__version__

attribute.

“PEP 8 describes the use of a module attribute called

Code:
__version__

for recording “Subversion, CVS, or RCS” version strings using keyword expansion. In the PEP author’s own email archives, the earliest example of the use of an

Code:
__version__

module attribute by independent module developers dates back to 1995.”

You can also use the following one-liner snippet to run this from your terminal (macOS, Linux, Ubuntu) or CMD/Powershell (Windows):

Code:
python3 -c "import my_library; print(my_library.__version__)"

However, this method doesn’t work for all libraries, so while simple, I don’t recommend it as a general approach for that reason.

Method 5: importlib.metadata.version

The

Code:
importlib.metadata

library provides a general way to check the package version in your Python script via

Code:
importlib.metadata.version('abc')

for library

Code:
abc

. This returns a string representation of the specific version such as

Code:
1.2.3

depending on the concrete version in your environment.

Here’s the code:

Code:
import importlib.metadata
print(importlib.metadata.version('abc'))
# 1.2.3

Method 6: conda list

If you have created your Python environment with Anaconda, you can use

Code:
conda list

to list all packages installed in your (virtual) environment. Optionally, you can add a regular expression using the syntax

Code:
conda list regex

to list only packages matching a certain pattern.

How to list all packages in the current environment?

Code:
conda list

How to list all packages installed into the environment

Code:
'xyz'

Code:
conda list -n xyz

Regex: How to list all packages starting with

Code:
'abc'

Code:
conda list '^abc'

Method 7: pip freeze

The

Code:
pip freeze

command without any option lists all installed Python packages in your environment in alphabetically order (ignoring UPPERCASE or lowercase). You can spot your specific package

Code:
abc

if it is installed in the environment.

Code:
pip freeze

Output example (depending on your concrete environment/installation):

Code:
PS C:\Users\xcent> pip freeze
aaa==1.2.3
...
abc==1.2.3
...
zzz==1.2.3

You can modify or exclude specific packages using the options provided in this screenshot:

[Image: image-62.png]

source

Method 8: pip freeze + grep on Linux/Ubuntu/macOS

To check the versions of a single package on Linux/Ubuntu/macOS, you can chain

Code:
pip freeze

with

Code:
grep abc

using the CMD or Powershell command:

Code:
pip freeze | grep abc

to programmatically locate the version of your particular package

Code:
abc

in the output list of package versions.

Here’s an example for

Code:
abc

Code:
pip freeze | grep abc
abc==1.2.3

Related Questions

Check abc Installed Python

How to check if

Code:
abc

is installed in your Python script?

To check if

Code:
abc

is installed in your Python script, you can run

Code:
import abc

in your Python shell and surround it by a try/except to catch a potential

Code:
ModuleNotFoundError

Code:
try: import abc print("Module abc installed")
except ModuleNotFoundError: print("Module abc not installed")

Check abc Version Python

How to check the package version of

Code:
abc

in Python?

To check which version of

Code:
abc

is installed, use

Code:
pip show abc

Code:
pip3 show abc

in your CMD/Powershell (Windows), or terminal (macOS/Linux/Ubuntu) to obtain the output

Code:
major.minor.patch

Code:
pip show abc # or pip3 show abc
# 1.2.3

Check abc Version Linux

How to check my

Code:
abc

version in Linux?

To check which version of

Code:
abc

is installed, use

Code:
pip show abc

Code:
pip3 show abc

in your Linux terminal.

Code:
pip show abc # or pip3 show abc
# 1.2.3

Check abc Version Ubuntu

How to check my

Code:
abc

version in Ubuntu?

To check which version of

Code:
abc

is installed, use

Code:
pip show abc

Code:
pip3 show abc

in your Ubuntu terminal.

Code:
pip show abc # or pip3 show abc
# 1.2.3

Check abc Version Windows

How to check my

Code:
abc

version on Windows?

To check which version of

Code:
abc

is installed, use

Code:
pip show abc

Code:
pip3 show abc

in your Windows CMD, command line, or PowerShell.

Code:
pip show abc # or pip3 show abc
# 1.2.3

Check abc Version Mac

How to check my

Code:
abc

version on macOS?

To check which version of

Code:
abc

is installed, use

Code:
pip show abc

Code:
pip3 show abc

in your macOS terminal.

Code:
pip show abc # or pip3 show abc
# 1.2.3

Check abc Version Jupyter Notebook

How to check my

Code:
abc

version in my Jupyter Notebook?

To check which version of

Code:
abc

is installed, add the line

Code:
!pip show abc

to your notebook cell where you want to check. Notice the exclamation mark prefix

Code:
!

that allows you to run commands in your Python script cell.

Code:
!pip show abc

Output: The following is an example on how this looks for

Code:
abc

in a Jupyter Notebook cell:

Code:
Package Version
--------------- ---------
aaa 1.2.3
...
abc 1.2.3
...
zzz 1.2.3

Check abc Version Conda/Anaconda

How to check the

Code:
abc

version in my conda installation?

Use

Code:
conda list 'abc'

to list version information about the specific package installed in your (virtual) environment.

Code:
conda list 'abc'

Check abc Version with PIP

How to check the

Code:
abc

version with pip?

You can use multiple commands to check the

Code:
abc

version with PIP such as

Code:
pip show abc

Code:
pip list

Code:
pip freeze

, and

Code:
pip list

Code:
pip show abc
pip list
pip freeze
pip list

The former will output the specific version of

Code:
abc

. The remaining will output the version information of all installed packages and you have to locate

Code:
abc

first.

Check Package Version in VSCode or PyCharm

How to check the

Code:
abc

version in VSCode or PyCharm?

Integrated Development Environments (IDEs) such as VSCode or PyCharm provide a built-in terminal where you can run

Code:
pip show abc

to check the current version of

Code:
abc

in the specific environment you’re running the command in.

Code:
pip show abc
pip3 show abc pip list
pip3 list pip freeze
pip3 freeze

You can type any of those commands in your IDE terminal like so:

[Image: image-64-1024x560.png]

Summary

In this article, you’ve learned those best ways to check a Python package version:

Method 1:
Code:
pip show abc
Method 2:
Code:
pip list
Method 3:
Code:
pip list | findstr abc
Method 4:
Code:
library.__version__
Method 5:
Code:
importlib.metadata.version
Method 6:
Code:
conda list
Method 7:
Code:
pip freeze
Method 8:
Code:
pip freeze | grep abc

Thanks for giving us your valued attention — we’re grateful to have you here!

Programmer Humor

There are only 10 kinds of people in this world: those who know binary and those who don’t.

~~~

There are 10 types of people in the world. Those who understand trinary, those who don’t, and those who mistake it for binary.