Python Flow Control If/else

Conditional Statement in Python perform different computations or actions depending on whether a specific Boolean constraint evaluates to true or false. Conditional statements are handled by IF statements in Python.

#
#Example file for working with conditional statement
#
def main():
x,y =2,8

if(x < y):
st= "x is less than y"
print(st)

if __name__ == "__main__":
main()


In this above, if the condition is not met, then st becomes undefined and the run time will give error.

Below is for elif

#
#Example file for working with conditional statement
#
def main():
x,y =8,8

if(x < y):
st= "x is less than y"

elif (x == y):
st= "x is same as y"

else:
st="x is greater than y"
print(st)

if __name__ == "__main__":
main()


A short form like ternary operator is like below

def main():
x,y = 10,8
st = "x is less than y" if (x < y) else "x is greater than or equal to y"
print(st)

if __name__ == "__main__":
main()


Python doesn't have switch statement. Python uses dictionary mapping to implement switch statement in Python

def SwitchExample(argument):
    switcher = {
        0: " This is Case Zero ",
        1: " This is Case One ",
        2: " This is Case Two ",
    }
    return switcher.get(argument, "nothing")


if __name__ == "__main__":
    argument = 1
    print (SwitchExample(argument))



References
https://www.guru99.com/if-loop-python-conditional-structures.html