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I would like to understand why one program of mine is giving error and one not where as I am applying same concept for both of them.

The program that is giving error:

greeting = "test"
age = 24
print( greeting + age)

Which is true and it should give error because of incompatible variable types being concatenated. But this same behavior I was expecting from the below code as well where as it is giving proper result. Why is it so?

print("Please enter your name: ")
myname = input()
print("Your name is " + myname)
print("Please enter your age: ")
myage = input()
print("Your age is: " + myage)
print("Final Outcome is:")
print(myage + " " + myname)
asked May 12, 2018 at 4:03
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  • The second program has only strings involved. You have the right idea that incompatible types can lead to an error. Commented May 12, 2018 at 4:06
  • input can only return a string because you type characters. It returns '24', not 24. Commented May 12, 2018 at 4:07
  • Do you have python 2 or 3? Because raw_input() in Python 2.x and input() in Python 3.x Commented May 12, 2018 at 4:07
  • Does it mean that value in myage variable is a string variable? Commented May 12, 2018 at 4:08
  • input() reads input as strings only. Commented May 12, 2018 at 4:08

2 Answers 2

2

By default the input function in Python returns a string type. So when you enter the age, it is not being returned to your program as an int but rather a string. So:

print("Your age is: " + myage)

Actually looks like:

print("Your age is: " + "24")
Nishant Nawarkhede
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answered May 12, 2018 at 4:11
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2 Comments

Great. Thanks for the help. (y)
@GurmeetKaur, if you believe that this, or the other answers, answers your question, please click the green check mark on the left.
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input() returns a string, even if the user enters a number.

Sean Francis N. Ballais
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answered May 12, 2018 at 4:07

3 Comments

Thanks for the reply. Now, if I want to convert it into numeric value. What should I do? I know about str() which converts numeric to string but how to do vice versa?
for example int(input())
Great. Thank you for the help xhancar. (y)

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