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importance of the code try and except in python

why do these 2 codes important? can't i just create a program that have no try/except? and how will you know when to put these codes in your program?

12th Dec 2017, 8:22 AM
Zara suto
Zara suto - avatar
2 Respuestas
+ 4
sure it works without. There are other ways and it is a question of quality. let it crash if you wsnt.
12th Dec 2017, 8:51 AM
Oma Falk
Oma Falk - avatar
+ 3
Depends. If there is possibility of crashing, use try and except. Like, if the user inputs a string when you want an integer, let's face it: it's going to crash; a = int(input("Enter a number: ")) print(a+10) #Input: 10 Output: 20 #Input: Hi Output: Error But if you are smart, you would have prepared for that; try: a = int(input("Enter a number: ")) print(a+10) except: print("Please try again.") #Input: 10 Output: 20 #Input: Hi Output: Please try again. Thus the system would not crash. Knowing this may be key to the user-friendliness of your program, so I'd take more notice of these. Hope this helped! 😉
12th Dec 2017, 9:41 AM
blackcat1111
blackcat1111 - avatar