test.py

# A = [1,2,2,2,3]
# for item in A:
#     if item ==2:
#         A.remove(item)
#     else:
#         print(item)
# print(A)            
A = [1,2,2,3]
for _ in A:
    if _ ==2:
         A.remove(_)
    else:
         print(_)
print(A)