当你在Python编程中遇到“name 'plt' is not defined”这个错误时,通常意味着在你的代码中使用了plt这个别名,但是没有正确地导入与之关联的模块。针对这个问题,你可以按照以下步骤进行检查和修正: 检查是否已导入matplotlib.pyplot模块: 在你的Python脚本或Jupyter Notebook中,确保你已经导入了matplotlib.pyplot模块,并...
The Python NameError: name 'plt' is not defined occurs when we use the `pyplot` module without importing it first.
In conclusion, the “NameError: name ‘plt’ is not defined” error is a common issue that can occur when using the Matplotlib library in Python. This error typically occurs when the user forgets to import the library or incorrectly imports it. To fix this error, you can simply import the...
2 plt.xlabel('Time (s)') 3 plt.ylabel('Cumulative distance (cm)') 4 plt.tight_layout() 5 plt.savefig('imgs/ex1_fig2a.eps', format='eps', dpi=300) NameError: name 'plt' is not defined I believe this is a matplotlib issue (see, e.g.,konstantint/matplotlib-venn#33). How ca...
$ docker run -it continuumio/anaconda3:latest python -c '\ > import matplotlib; \ > import matplotlib.pyplot as plt; \ > ' Traceback (most recent call last): File "<string>", line 3, in <module> File "/opt/conda/lib/python3.6/site-packages/matplotlib/pyplot.py", line 113, in ...
在Python文件开头加上 import matplotlib.pyplot as plt
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