I was following an exercise in a book when I edited the code and came across something I did not get. Here is the relevant part of the code that works:
start=None #initialise
while start !="":
start=input("nStart: ")
if start:
start=int(start)
finish=int(input("Finish: "))
print("word[",start,":",finish,"] is", word[start:finish])
I then changed the code to this:
start=None #initialise
while start !="":
start=int(input("nStart: "))
if start:
finish=int(input("Finish: "))
print("word[",start,":",finish,"] is", word[start:finish])
I combined the int conversion and the input on the same line, rather than to have two different statements. But got an error message:
Traceback (most recent call last):
File "C:UsersFaisalDocumentspythonpizza_slicer.py", line 23, in
start=int(input("nStart: "))
ValueError: invalid literal for int() with base 10: ''
Could someone tell me why I got this error message?