python3 ImportError：Windows10上没有名为“ numpy”的模块

Question

I have a problem with importing the 'numpy' package in python. I'm currently using python3.4.5 in anaconda3. But when I try to run the following code,

import pandas as pd
import numpy as np
import matplotlib.pyplot as plt

I get the following error message.

Traceback (most recent call last):
  File "D:/SourceCodes/PycharmSources/trial/titanic.py", line 1, in <module>
    import matplotlib.pyplot as plt
  File "C:\Anaconda3\envs\py34\lib\site-packages\matplotlib\__init__.py", line 122, in <module>
    from matplotlib.cbook import is_string_like, mplDeprecation, dedent, get_label
  File "C:\Anaconda3\envs\py34\lib\site-packages\matplotlib\cbook.py", line 32, in <module>
    import numpy as np
ImportError: No module named 'numpy'

Well, I've tried uninstalling/reinstalling the numpy and pandas libraries using both the

pip uninstall numpy / pip insatll numpy
conda install -f numpy

commands, but nothing seems to solve my problem.

Thank you in advance.

Answer 1

See my answer here

After trying many suggestions from various sites and similar questions, what worked for me was to uninstall all Python stuff and reinstall Anaconda only. The previous Python installation I had was not only redundant but only caused me trouble.