Install a specific version of a Python package using PIP
David Y.
The Problem
How do I install a specific, older version of a Python package using PIP? Will it matter if I have another version already installed?
The Solution
We can install an older version of a specific package by using the following syntax in our PIP command:
pip install requests==2.30.0
The == syntax allows us to specify a version number. We can see which version numbers are available by looking at the release history on the package’s page on PyPI.org.
Note that, on Windows, the package name and version should be surrounded by quotation marks:
pip install "requests==2.30.0"
If a newer version of the package is already installed on our system or in our current virtual environment, we will need to add the --force-reinstall flag to uninstall that version first:
pip install --force-reinstall requests==2.30.0
To ensure that future users of our project install the correct package versions when setting it up, we should create a requirements file. This is a file in our project’s root directory named requirements.txt, which contains a list of requirement specifiers (i.e. package names and versions) on which our project depends. For this example, our requirements file would have one line:
requests==2.30.0
We would then be able to install the correct version of this and any other packages added by running the following PIP command:
pip install -r requirements.txt
Again, we may need to provide the --force-reinstall flag when running this command.
To avoid changing the packages on our entire system for individual Python projects, we can use a virtual environment. This is the recommended way to deal with Python dependencies in most circumstances.
Related Answers
- Access the index of a for loop
- Access environment variables in Python
- Add a new column to a DataFrame in Python Pandas
- Accessing the Index in a `for` Loop in Python
- Append vs. extend in Python
- Change the size of figures drawn with Matplotlib in Python
- Check for NaN values in Python
- Check if a dictionary contains a key in Python
- Check if a string is empty in Python
- Check if a list is empty in Python
- Concatenate two lists in Python
- Convert a list to a string in Python
- Convert a string to bytes in Python
- Convert an integer to a string in Python
- Convert bytes to a string in Python
- Convert a string containing a date into datetime in Python
- Copy files in Python
- Count occurrences of item in Python list
- Declare an array in Python
- Define a two-dimensional array in Python
- Delete a column from a DataFrame in Python Pandas
- Delete a file or folder in Python
- Delete element from a dictionary in Python
- Determine the type of a Python variable
- Difference between `@staticmethod` and `@classmethod` function decorators in Python
- Extract a substring from a string in Python
- Fastest way to check if a list contains an item in Python
- How to manage feature flags without making performance worse
- Find all files in a directory with a given extension using Python
- Find item in list in Python
- Find the current directory and executed file's directory in Python
- Generate random integers within a range in Python
- Get key by value in dictionary Python
- Get the current script file's full directory path in Python
- Get the current time in Python
- Get the last element of a list in Python
- Get the length of a list in Python
- Get unique values from a list in Python
- How do I append one string to another in Python?
- How do I parse a string to a float or int?
- How do I remove a trailing newline from a string in Python
- What does `if __name__ == "__main__":` do?
- Import files from a different folder in Python
- Indentation errors in Python
- Install Python packages from a local package index
- Invalid literal for int error in Python
- Iterate over rows in a Pandas DataFrame in Python
- Limit floats to two decimal points in Python
- Is There a List of pytz Timezones?
- Logical AND (&&) in Python
- Lowercase a string in Python
- Making a list out of a list of lists in Python?
- Measure elapsed time in Python
- Pandas DataFrame row count in Python
- Print multiple times without newlines or spaces in Python
- Add new keys to a dictionary in Python
- Sort a dictionary by value in Python
- Python equivalent of a ternary operator: if-then-else in one line
- Iterate over a dictionary in Python
- List files in a directory using Python
- How Do I Merge Two Dictionaries in a Single Expression (Take Union of Dictionaries)?
- How Can I Safely Create a Nested Directory?
- Python slice notation
- Does Python Have a Ternary Conditional Operator?
- What Does the `yield` Keyword in Python Do?
- Raise an exception in Python
- Read a file line by line into a list Python
- Remove element from a list by index in Python
- Remove whitespace from a string in Python
- Rename columns in a Python Pandas DataFrame
- Running External Programs in Python
- Save a Matplotlib plot to a file in Python
- Select multiple columns in Python Pandas
- Select rows from a Python Pandas DataFrame based on column values
- Slicing in Python
- Split statements across multiple lines in Python code
- TypeError 'str' Object Does Not Support Item Assignment
- `super()` and `__init__()` in Python
- Switch-case statement equivalents in Python
- Time delay in Python
- UnboundLocalError Local Variable 'index' Referenced Before Assignment
- Upgrade specific `pip` packages in Python
- Use global variables in Python functions
- What are Python Metaclasses?
- Write one or more lines to a file in Python