如何解决AttributeError: 'version_info' object has no attribute 'version'错误

云上老周

2026-7-22

问题解决：Carla Simulator运行module_7.py时的pyparsing版本错误

报错详情

运行module_7.py时触发以下错误：

C:\Coursera\CarlaSimulator\PythonClient\Course1FinalProject>python module_7.py
Traceback (most recent call last):
  File "module_7.py", line 26, in <module>
    import matplotlib.pyplot as plt
  File "C:\Users\User\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\__init__.py", line 131, in <module>
    from matplotlib.rcsetup import defaultParams, validate_backend, cycler
  File "C:\Users\User\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\rcsetup.py", line 29, in <module>
    from matplotlib.fontconfig_pattern import parse_fontconfig_pattern
  File "C:\Users\User\AppData\Local\Programs\Python\Python36\lib\site-packages\matplotlib\fontconfig_pattern.py", line 22, in <module>
    from pyparsing import (Literal, ZeroOrMore, Optional, Regex, StringEnd,
  File "C:\Users\User\AppData\Local\Programs\Python\Python36\lib\site-packages\pyparsing\__init__.py", line 130, in <module>
    __version__ = __version_info__.__version__
AttributeError: 'version_info' object has no attribute '__version__'

依赖要求

Carla Simulator指定的依赖版本：

Pillow>=3.1.2
numpy>=1.14.5
protobuf>=3.6.0
pygame>=1.9.4
matplotlib>=2.2.2
future>=0.16.0
scipy>=0.17.0

解决步骤

这个错误是pyparsing版本与Python3.6不兼容导致的，高版本pyparsing已停止支持Python3.6，需安装适配版本：

卸载当前pyparsing：
```
pip uninstall -y pyparsing
```
安装兼容Python3.6的pyparsing版本（推荐2.4.7，适配matplotlib2.2.2的依赖要求）：
```
pip install pyparsing==2.4.7
```
验证安装结果：
```
pip show pyparsing
```
确认输出的版本为2.4.7即可。
重新运行module_7.py。