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 Matplolib graphic from batch

Sorry I don't know if is this the correct section
of the forum

I used this script taken from an example
of matplolib

The script is running from the idle but if
I run it from a batch:

<\cd \Python36
python C:\Temp_DD1\Duca\PY_dep\
rem pause\>

file I got an error:
File "C:\Temp_DD1\Duca\PY_dep\", line 1, in <module> import matplotlib ModuleNotFoundError: No module named 'matplotlib'
Here the code of the script:

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

# Data for plotting
t = np.arange(0.0, 2.0, 0.01)
s = 1 + np.sin(2 * np.pi * t)

fig, ax = plt.subplots()
ax.plot(t, s)

ax.set(xlabel='time (s)', ylabel='voltage (mV)',
       title='About as simple as it gets, folks')
scidam wrote Sep-11-2019, 08:34 AM:
Please post all code, output and errors (in it's entirety) between their respective tags. I did it for you this time, Here are instructions on how to do it yourself next time.
I got such type of error when a package is not installed: I would say that it's your case with matplotlib (or maybe be are you using a specific distribution?)
any possibility that you have more than one python installation or using virtualenvironment?

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