如何为Python 2.7升级matplotlib版本及指定升级至1.10版本

AI 小北

2026-5-26

Upgrading matplotlib for Python 2.7: Two Scenarios

Hey there! Let's break down how to handle both of your matplotlib upgrade questions for Python 2.7. First, a critical heads-up: Python 2.7 reached end-of-life in 2020, so matplotlib stopped supporting it after version 2.2.5. Keep that in mind as we go through the steps.

1. Upgrading matplotlib to the latest compatible version for Python 2.7

Since you can't install any matplotlib version newer than 2.2.5 for Python 2.7, here's how to get this latest compatible release set up:

First, make sure your pip2 (the Python 2.7-specific pip) is up to date—old pip versions often struggle with package compatibility. Run this command:
```
pip2 install --upgrade pip==20.3.4
```
(20.3.4 is the final pip version that supports Python 2.7)
Now upgrade matplotlib to its newest supported release for Python 2.7:
```
pip2 install --upgrade matplotlib==2.2.5
```
Pro tip: If you hit dependency errors (like numpy being too new or old), install a compatible numpy version first:
```
pip2 install numpy<=1.16.5
```
(1.16.5 is the last numpy version that works with Python 2.7)

2. Upgrading matplotlib specifically to version 1.10 for Python 2.7

If you need exactly version 1.10, the process is straightforward—just specify the version number during installation:

First, uninstall any existing matplotlib version to avoid conflicts:
```
pip2 uninstall -y matplotlib
```
Install the 1.10.0 release directly:
```
pip2 install matplotlib==1.10.0
```
Note: Version 1.10 is quite old, so it requires an older numpy version (like 1.9.3). If you run into installation errors, try installing this compatible numpy first:
```
pip2 install numpy==1.9.3
```