Addition of multiple numbers in python

Question

I wrote a code like this

def add(*args):
sum = 0
for i in args:
sum = sum + i
return sum

print(add(3,4))

I directly given values in the add function call.
How can I get values from the user? And also tell me how to print an error message when user enters any alphabet or special character ??

Answer 1

Check this out:
All greate things are simple,

https://code.sololearn.com/cBLxyszh1Qtj/?ref=app

Answer 2

def add(args):
sum = 0
for i in args:
sum = sum + i
return sum

#try like this
a = []

try:
a = list(map(int, input().split()))
except:
print("Please enter Numeric values only")
exit()

print(add(a))

Try thus code and pass space seperated values in single line

Ex input : 1 2 3 4

Answer 3

Pardha Saradhi My code requires all the inputs to be in separate lines. If you want the numbers to be in a single line, then try this one:

try: print(add(*map(int, input().split())))
except: print("Please enter a valid input!")

# Hope this helps

Answer 4

Wow Shadoff nice way to code it 👍👍

Answer 5

Shadoff Thank you ☺️

Answer 6

def add(*args):
sum = 0
for i in args:
sum = sum + i
return sum

#try like this

try:
a = int(input())
b = int(input())
except:
print("Please enter Numeric values only")

print(add(a,b))

Answer 7

Calvin Thomas Thank you. But when I run that code, I given Many numbers as input but did not get the answer. I don't know what to give to get output. Can you please tell me

Answer 8

exit() is used to stop the execution of program at the point where it is used, I have used this so that you can only see the error message that we are providing to user and not the error generated by python.

Answer 9

Calvin Thomas thank you

Answer 10

try:
def s(*x):
s = sum([float(i) for i in x])
return s
n = input().split()
x = list(map(float,n))
print(s(*x))
except:
print("input error")

# you must input digit separated by space. Ex: 1 2 3
#it's outputting real number
#hope this help

Answer 11

THIS IS THE CODE FOR ADDITION FOR TWO NUMBERS.
https://code.sololearn.com/cm49144FHOA6/?ref=app

Answer 12

BR0 V CAN'T SEND SCREEN SHOTS IN SOLOLEARN.

Answer 13

Pariket where can I use that input () function

Answer 14

Or if you want multiple inputs you can even use list for that

Answer 15

Sumit Kumar When I entered alphabets, it is not showing any error message

Answer 16

Pardha Saradhi Here's a possible solution:

def add(*args): return sum(args)

inp = []
try:
while 1: inp.append(int(input()))
except ValueError:
print("Please enter a valid input!")
exit()
except EOFError: print(add(*inp))

# Hope this helps

Answer 17

Pardha Saradhi

Run the code and see the output window you will find the error message for user followed by the error message generated by python

Hope this helps 😊

Answer 18

Sumit Kumar I already did that. I given 6 and t as inputs. It shows valueError

Answer 19

Actually I don't know how to send screen shot in sololearn , if anyone know plz tell in that way Ican clarify the things better👍

Answer 20

Sumit Kumar Yeahh I got it. Thank you
Can you please tell me what is exit() function