In this article, I’ll show you:

π¬ How to check the version of the Python module (package, library) `fractions`

? And how to check if `fractions`

is installed anyways?

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

:

**Method 1**:`pip show fractions`

**Method 2**:`pip list`

**Method 3**:`pip list | findstr fractions`

**Method 4**:`library.__version__`

**Method 5**:`importlib.metadata.version`

**Method 6**:`conda list`

**Method 7**:`pip freeze`

**Method 8**:`pip freeze | grep fractions`

Before we go into these ways to check your `fractions`

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!

Table of Contents

## A Note on Python Version Numbering

π‘**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 `major.minor.patch`

.

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

`x.y.z`

Practical examples would use numerical values for `x`

, `y`

, and `z`

:

`1.2.3`

`4.1.4`

`1.0.0`

This is shorthand for

`major.minor.patch`

**Major**releases (

to**0**.1.0

) are used for the first stable release or “breaking changes”, i.e., major updates that break backward compatibility.**1**.0.0**Minor**releases (`0.`

to**1**.0`0.`

) are used for larger bug fixes and new features that are backward compatible.**2**.0**Patch**releases (`0.1.`

to**0**`0.1.`

) are used for smaller bug fixes that are backward compatible.**1**

Let’s dive into the meat of this article:

π¬ **Question**: How to check the (major, minor, patch) version of `fractions`

in your current Python environment?

## Method 1: pip show

To check which version of the Python library `fractions`

is installed, run `pip show fractions`

or `pip3 show fractions`

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 `a.b.c`

:

PS C:\Users\xcent> pip show fractions Name: fractions 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:

python -m pip show fractions python3 -m pip show fractions py -m pip show fractions pip3 show fractions

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

version.

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## Method 2: pip list

To check the versions of ** all** installed packages, use

`pip list`

and locate the version of `fractions`

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 `1.2.3`

:

PS C:\Users\xcent> pip list Package Version ------------- – – ------- aaa 1.2.3 ... fractions 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:

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

`pip list`

with `findstr fractions`

using the CMD or Powershell command: `pip3 list | findstr fractions`

to locate the version of `fractions`

in the output list of package versions automatically.Here’s an example for `fractions`

:

pip3 list | findstr fractions 1.2.3

## Method 4: Module __version__ Attribute

To check which version is installed of a given `library`

, you can use the `library.__version__`

attribute after importing the library (package, module) with `import library`

.

Here’s the 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 `__version__`

attribute.

*“PEP 8 describes the use of a module attribute called __version__ for recording “Subversion, CVS, or RCS” version strings using keyword expansion. In the PEP authorβs own email archives, the earliest example of the use of an __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):

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 `importlib.metadata`

library provides a general way to check the package version in your Python script via `importlib.metadata.version('fractions')`

for library `fractions`

. This returns a string representation of the specific version such as `1.2.3`

depending on the concrete version in your environment.

Here’s the code:

import importlib.metadata print(importlib.metadata.version('fractions')) # 1.2.3

## Method 6: conda list

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

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

to list only packages matching a certain pattern.

How to list all packages in the current environment?

conda list

How to list all packages installed into the environment `'xyz'`

?

conda list -n xyz

**Regex**: How to list all packages starting with `'fractions'`

?

conda list '^fractions'

## Method 7: pip freeze

The `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 `fractions`

if it is installed in the environment.

pip freeze

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

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

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

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

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

`pip freeze`

with `grep fractions`

using the CMD or Powershell command: `pip freeze | grep fractions`

to programmatically locate the version of your particular package `fractions`

in the output list of package versions.Here’s an example for `fractions`

:

pip freeze | grep fractions fractions==1.2.3

## Related Questions

### Check fractions Installed Python

**How to check if fractions is installed in your Python script?**

To check if `fractions`

is installed in your Python script, you can run `import fractions`

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

.

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

### Check fractions Version Python

**How to check the package version of fractions in Python?**

To check which version of `fractions`

is installed, use `pip show fractions`

or `pip3 show fractions`

in your CMD/Powershell (Windows), or terminal (macOS/Linux/Ubuntu) to obtain the output `major.minor.patch`

.

pip show fractions # or pip3 show fractions # 1.2.3

### Check fractions Version Linux

**How to check my fractions version in Linux?**

To check which version of `fractions`

is installed, use `pip show fractions`

or `pip3 show fractions`

in your Linux terminal.

pip show fractions # or pip3 show fractions # 1.2.3

### Check fractions Version Ubuntu

**How to check my fractions version in Ubuntu?**

To check which version of `fractions`

is installed, use `pip show fractions`

or `pip3 show fractions`

in your Ubuntu terminal.

pip show fractions # or pip3 show fractions # 1.2.3

### Check fractions Version Windows

**How to check my fractions version on Windows?**

To check which version of `fractions`

is installed, use `pip show fractions`

or `pip3 show fractions`

in your Windows CMD, command line, or PowerShell.

pip show fractions # or pip3 show fractions # 1.2.3

### Check fractions Version Mac

**How to check my fractions version on macOS?**

To check which version of `fractions`

is installed, use `pip show fractions`

or `pip3 show fractions`

in your macOS terminal.

pip show fractions # or pip3 show fractions # 1.2.3

### Check fractions Version Jupyter Notebook

**How to check my fractions version in my Jupyter Notebook?**

To check which version of `fractions`

is installed, add the line `!pip show fractions`

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

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

!pip show fractions

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

in a Jupyter Notebook cell:

Package Version ------------- – – ------- aaa 1.2.3 ... fractions 1.2.3 ... zzz 1.2.3

### Check fractions Version Conda/Anaconda

**How to check the fractions version in my conda installation?**

Use `conda list 'fractions'`

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

conda list 'fractions'

### Check fractions Version with PIP

**How to check the fractions version with pip?**

You can use multiple commands to check the `fractions`

version with PIP such as `pip show fractions`

, `pip list`

, `pip freeze`

, and `pip list`

.

pip show fractions pip list pip freeze pip list

The former will output the specific version of `fractions`

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

first.

### Check Package Version in VSCode or PyCharm

**How to check the fractions version in VSCode or PyCharm?**

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

to check the current version of `fractions`

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

pip show fractions pip3 show fractions pip list pip3 list pip freeze pip3 freeze

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

## Summary

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

**Method 1**:`pip show fractions`

**Method 2**:`pip list`

**Method 3**:`pip list | findstr fractions`

**Method 4**:`library.__version__`

**Method 5**:`importlib.metadata.version`

**Method 6**:`conda list`

**Method 7**:`pip freeze`

**Method 8**:`pip freeze | grep fractions`

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

## Programmer Humor

*There are only 10 kinds of people in this world: those who know binary and those who donβt.*π©π§ββοΈ

~~~

There are 10 types of people in the world. Those who understand trinary, those who donβt, and those who mistake it for binary.

~~~

There are 10 types of people in the world. Those who understand trinary, those who donβt, and those who mistake it for binary.

*π©π§ββοΈπ±ββοΈ*

## Related Tutorials

- How to Check Your Python Version
- How to Check Your Module Version
- How to Create a Python Module
- Start Learning Python
- How to Become a Freelance Developer
- PIP Commands – A Simple Guide

While working as a researcher in distributed systems, Dr. Christian Mayer found his love for teaching computer science students.

To help students reach higher levels of Python success, he founded the programming education website Finxter.com. He’s author of the popular programming book Python One-Liners (NoStarch 2020), coauthor of the Coffee Break Python series of self-published books, computer science enthusiast, freelancer, and owner of one of the top 10 largest Python blogs worldwide.

His passions are writing, reading, and coding. But his greatest passion is to serve aspiring coders through Finxter and help them to boost their skills. You can join his free email academy here.