Cannot run matplotlib, on Pycharm alone cannot find the specified file

1. Query in cmd: there are 2 versions of matplotlib, on the computer, and then follow the above prompts to enter a string of "% - sharp-upgrade-" commands, which should be the latest version, but the old version may still exist.
2. Use Geany to enter the following command and find that it can be run.

import matplotlib.pyplot as plt
squa=
plt.plot (squa)
plt.show ()

3. Enter the same command in Pycharm, the feedback is as follows, how to solve it?

F:PycharmvenvScriptspython.exe F:/Pycharm/s.py
Traceback (most recent call last):
File "F:/Pycharm/s.py", line 1, in < module >

import matplotlib.pyplot as plt

ModuleNotFoundError: No module named "matplotlib"

Process finished with exit code 1

Mar.20,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-7bf7ce-1f759.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-7bf7ce-1f759.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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