Solving TypeError when concatenating a string

Question

I assigned these variables:

x = "1"
name = str(input("Enter Name  :"))
gender = str(input("Enter Gender (M/F)  :")).lower
year = int(input("Enter Year of Birth  :"))   
postcode = str(input("Enter Postcode  :"))

Then I got I got a part of the string postcode.

partCode = postcode[0:3]

Then I converted the year in to a string.

birthYear = str(year)

After, I tried concatenating all the strings:

username = name + birthYear + gender + partCode + x

And I receive this error:

TypeError: can only concatenate str (not "builtin_function_or_method") to str

How can I solve it?

Why are you converting year to an int if you are just going to convert it back to a str in the first place? None of the calls to str are necessary, because input already returns a str. — chepner
– chepner, Commented Jan 14, 2020 at 20:59
As for your question, lower is a method, not a lowercase version of the original string. You need to call it: gender = input(...).lower(). — chepner
– chepner, Commented Jan 14, 2020 at 20:59
in addition to advise from @chepner, use string-formatting - e.g. f-strings or str.format() method, not concatenation. — buran
– buran, Commented Jan 14, 2020 at 21:01

Mayank · Accepted Answer · 2020-01-14 21:06:19Z

3

The above error is because gender is not a string

replace

gender = str(input("Enter Gender (M/F)  :")).lower

with

gender = str(input("Enter Gender (M/F)  :")).lower()

edited Jan 14, 2020 at 21:06

answered Jan 14, 2020 at 21:01

Mayank

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1 Comment

M. Ibtihaz Islam Over a year ago

Thanks! I realised what was wrong. You have been very helpful.

AmirHmZ · Accepted Answer · 2020-01-14 21:03:10Z

1

Try this :

x = "1"
name = str(input("Enter Name  :"))
gender = str(input("Enter Gender (M/F)  :")).lower()
year = int(input("Enter Year of Birth  :"))   
postcode = str(input("Enter Postcode  :"))

partCode = postcode[0:3]
birthYear = str(year)
username = name + birthYear + gender + partCode + x

answered Jan 14, 2020 at 21:03

AmirHmZ

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M. Ibtihaz Islam Over a year ago

Thanks! I realised the error and you have been really helpful!

Kenan · Accepted Answer · 2020-01-14 21:06:16Z

0

You don't need to convert any of the input variables their all read in as str.

This will do

x = "1"
name = str(input("Enter Name  :"))
gender = str(input("Enter Gender (M/F)  :")).lower()
year = str(input("Enter Year of Birth  :"))   
postcode = str(input("Enter Postcode  :"))

The issue is you didn't have () for the lower function so your gender variable was <built-in method lower of str object at 0x7fb7152ffc38>. That should explain your error

answered Jan 14, 2020 at 21:06

Kenan

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