Python for loop stops after 5 iterations

I am new to Python, and I was trying to create a simple game. Here I have a function in which I have a list called Health. I am using a for loop to pop all the elements of the list. For some reason, the for loop stops after looping for 5 times i think.

def luminaryMohg():
    global battlesFaught
    global mohgBeaten
    curseImmunity = False
    mohgHealth = ['*','*','*','*','*','*','*','*','*','*']
  print("\n*****************************************************************\n")
    print("""Welcome honored guest!!! To the birthplace of our dynasty.\n""")
    print("The fight with Mohg Begins.")
    for health in mohgHealth:
        print("----------------------------------MOHG's HEALTH-------------------------------------\n")
        print("-----------------", mohgHealth, "----------------------\n")
        print("1. Hit mohg with a sword.")
        input("\nPress Enter to hit")
        mohgHealth.pop()

Output:

Welcome honored guest!!! To the birthplace of our dynasty.

The fight with Mohg Begins.
———————————-MOHG’s HEALTH————————————-

—————– [‘‘, ‘‘, ‘‘, ‘‘, ‘‘, ‘‘, ‘‘, ‘‘, ‘‘, ‘‘] ———————-

1. Hit mohg with a sword.

Press Enter to hit
—————– [‘‘, ‘‘, ‘‘, ‘‘, ‘‘, ‘‘, ‘‘, ‘‘, ‘*’] ———————-

1. Hit mohg with a sword.

Press Enter to hit
—————– [‘‘, ‘‘, ‘‘, ‘‘, ‘‘, ‘‘, ‘‘, ‘‘] ———————-

1. Hit mohg with a sword.

Press Enter to hit
—————– [‘‘, ‘‘, ‘‘, ‘‘, ‘‘, ‘‘, ‘*’] ———————-

1. Hit mohg with a sword.

Press Enter to hit
—————– [‘‘, ‘‘, ‘‘, ‘‘, ‘‘, ‘‘] ———————-

1. Hit mohg with a sword.

Press Enter to hit
PS C:\Users\31dav\OneDrive\Documents>

>Solution :

The issue is that you are modifying a list while iterating over it. This creates surprising behavior for the end user. To demonstrate:

x = list(range(6))

for i in x:
    print('Current: ', i)
    print('Popped: ', x.pop())

Current:  0
Popped:  5
Current:  1
Popped:  4
Current:  2
Popped:  3

# Fewer elements are left, representing that the iteration stops early
# at the third step, rather than the 6th
print(x)
[0, 1, 2]

Either switch to iterating over a range, or use a while loop to modify the list:

while mohgHealth:
    print(...)
    _ = mohgHealth.pop()

Or

for i in range(len(mohgHealth)):
    _ = mohgHealth.pop()

Since you aren’t doing anything with the result, I wouldn’t worry about using pop and just iterate, when the iteration is complete, you’ve gone through all of the health:

for _ in mohgHealth:
    print("hit with sword")

# iteration complete
mohgHealth = []
print("mohgHealth is empty")