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...
$ 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 ...
The solution to the "NameError: name 'matplotlib' is not defined" is the same. After you install thematplotlibmodule, you have to import it before you are able to use it in your code. main.py # ✅ Import matplotlib.pyplot and alias it to pltimportmatplotlib.pyplotasplt# ✅ Import ...
from matplotlib import pyplot as plt Here you can find a working example: https://github.com/marceloprates/prettymaps/blob/main/notebooks/examples.ipynb I'm still having the same issue. Here's the intro to the script: Here's the error: ...
注意,如果在使用plt.text函数时没有指定坐标轴对象,就会抛出NameError: name ‘ax’ is not defined的错误。因此,在使用plt.text函数之前,一定要先创建坐标轴对象。通过以上步骤,可以解决Python错误:NameError: name ‘ax’ is not defined的问题,并成功使用plt.text函数绘制相对坐标文本。
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# plt.savefig('region_mayors_final.png')plt.show() i tried it before and there was no such problem. python pandas Share Copy link Improve this question Follow askedAug 1 at 6:02 Jennie 933 bronze badges 1 Answer Sorted by: 1 When loading the .csv file the years ...
我们可以先定义freqs变量再调用: freqs = {"a": 1, "b": 2, "c": 3} plt.bar(freqs.index, freqs.values, color="green") plt.show() 2. 变量名与已有函数或类重复 在Python中,某些函数或类的名称已被预定义,如果我们定义的变量名与其重复,就会出现NameError错误。
如果您在代码中创建App对象,则需要确保正确创建该对象。例如,请确保在创建对象之前定义了必要的变量或参数。 # 创建 App 对象前确保 Foo 已经被正确创建foo=Foo()App(foo) 总之,如果你遇到NameError: name 'App' is not defined错误,您应该确保您按照上述步骤进行检查。
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 can it be corrected? vivekhsridharclosed this ascompletedNov 22, 2018...