How to check if a variable/loop in Python was True?-CodePudding

I'm learning Python and had a small issue. I have this loop:

found = None 
print ('Before', found)
for value in [ 41, 5, 77, 3, 21, 55, 6]:
    if value == 21:
        found = True
    else: 
        found = False 
    print (found, value)
print ('After', found)

The code is well, but the issue is print ('After', found) I want it to tell me that there was a True value found in the loop. Is there a way to keep the code the way it is and resolve the issue?

CodePudding user response：

You don't want to reset found to False once you've set it to True. Initialize it to False, then only set it to True if value == 21; don't do anything if value != 21.

found = False 
print ('Before', found)
for value in [ 41, 5, 77, 3, 21, 55, 6]:
    if value == 21:
        found = True
    print (found, value)
print ('After', found)

Ignoring the print statement in the loop, you could just use any:

found = any(value == 21 for value in [ 41, 5, 77, 3, 21, 55, 6])

or even

found = 21 in [ 41, 5, 77, 3, 21, 55, 6]