conditional execution yes no = yes no < print('equal'print('less'print''greater'figure nested if statements if and print(' is positive single-digit number ' catching exceptions using try and except earlier we saw code segment where we used the input and int functions to read and parse an integer number entered by the user we also saw how treacherous doing this could beprompt "what is the air velocity of an unladen swallow?\nspeed input(promptwhat is the air velocity of an unladen swallowwhat do you meanan african or european swallowint(speedvalueerrorinvalid literal for int(with base when we are executing these statements in the python interpreterwe get new prompt from the interpreterthink "oops"and move on to our next statement however if you place this code in python script and this error occursyour script immediately stops in its tracks with traceback it does not execute the following statement here is sample program to convert fahrenheit temperature to celsius temperatureinp input('enter fahrenheit temperature'fahr float(inpcel (fahr print(celcode