Graphs not plotting when in while loop menu

Question

I have created a UI menu inside python by using a while true loop:

import matplotlib.pyplot as plt


choice=input('enter a number')
while True:
    if choice == '1':
        pass
    elif choice == '2':
        pass
    elif choice == '3':
        plt.plot(range(100),range(100))
        plt.show()

running it outside the while loop plots the graph just fine, but inside the loop, empty figures show up instead, and then python crashes.

why is it that i can't plot it inside the while loop.

Edit: I have been able to simplify the problem down to this:

import matplotlib.pyplot as plt

x,y=100
while True:
    plt.plot(x,y)

it seems the while True causes problems. any ideas?

See the example here. Hope it helps. github.com/ASH-WICUS/Notebooks/blob/master/… — ASH
– ASH, Commented Apr 8, 2022 at 3:49

sbmalik · Accepted Answer · 2022-04-06 14:18:05Z

3

Try using the plt.show() in the loop

answered Apr 6, 2022 at 14:18

sbmalik

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3 Comments

S12312 Over a year ago

i tried it. No luck

sbmalik Over a year ago

@S12312 I think the graphs fill up your memory please try to show some finite number of plots before going for infinte.. try 10, 20 then check by increasing number

S12312 Over a year ago

ok, it seems that once i added the plt.show() it runs in other IDEs, but not pycharm console. It could be something to do with the fact that i am using console and not the regular run.

Ran A · Accepted Answer · 2022-04-06 14:20:32Z

1

import matplotlib.pyplot as plt


choice=input('enter a number')
while True:
    if choice == '1':
        pass
    elif choice == '2':
        pass
    elif choice == '3':
        plt.plot(range(100),range(100))
        plt.show()
    choice=input('enter a number')

answered Apr 6, 2022 at 14:20

Ran A

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