+ 1

How do I recognise strings.

I have a calculator and it expects a float input. (num1 = float(input("""Multiplier:""", )) I would lake to make it that it can accept the string "pi" and recognise that the user want to use pi which is stored in a variable. How do I do that?

14th Mar 2017, 6:42 PM
Some Name
3 odpowiedzi
+ 8
num1 = input("Multiplier:") try: if num1.lower() == 'pi': num1 = 3.1415926535 else: num1 = float(num1) except: num1 = 0.0 # checks for π, if not then converts to float, if fails then assigns 0.0
14th Mar 2017, 11:56 PM
Kuba Siekierzyński
Kuba Siekierzyński - avatar
+ 1
These are great solutions however, my code already runs in a loop with if statement for each operations. But I found this to help me: float(input().replace("pi", 3.14.......))
15th Mar 2017, 10:01 AM
Some Name
0
def checkPi(x): p=float(3.14) num=str(x) if num == "pi": return p else: return num num1=input("Multiplier:") num1=checkPi(num1) print(num1) might be a better way, but this takes the input and runs it thru a function. if the function reads the string of pi it returns the number pi and if the function reads a number it returns the float
14th Mar 2017, 6:49 PM
LordHill
LordHill - avatar