TypeError: unsupported operand type(s) for -: 'int' and 'str' in Python

Dung Do Tien Sep 20 2021 131

Hello you guys, I am a newbie in Python and I'm also studying more about Python.

I have some lines of code,  I am writing a program to find the day of the week and the program runs smoothly until this block. Function as below:

D = input()
A = ( (14 - 'month') /12)
Y = ( 'Year' - 'A' )
MonthProblem = ( 'month' + 12 * 'A' - 2 )
week = ( ('D' + 'Y' + 'Y'/4 - 'Y'/100 + 'Y'/400 + 31 * 'MonthProblem'/12) % 7 )

But I get an exception TypeError: unsupported operand type(s) for -: 'int' and 'str' when I run code above.

Traceback (most recent call last):
  File "main.py", line 1, in <module>
    A = ( (14 - 'month') /12)
TypeError: unsupported operand type(s) for -: 'int' and 'str'

And I am using python 3.8.2

Anyone can explain it to me? How can I solve it?

Thanks for any response.

Have 2 answer(s) found.
  • P

    Phuong Phan Sep 20 2021

    Why do you can a variable wih ''?

    Please use variables by their name directly, without ''. The words in ''indicate a string, not a variable.

    In your case, the code should be changed as follows :

    D = input()
A = ( (14 - month) /12)
Y = ( Year - A )
MonthProblem = ( month + 12 * A - 2 )
week = ( (D + Y + Y/4 - Y/100 + Y/400 + 31 * MonthProblem/12) % 7 )

    if you have defined the variables.

  • U

    Ubonwan Raksasat Sep 20 2021

    I feel you are wrong about way do use a variable.

    'D' is a string value and it is not a variable get from user input. So please change 'D' to D

    D = input()
A = ( (14 - month) /12)
Y = ( Year - A )
MonthProblem = ( month + 12 * A - 2 )
week = ( (D + Y + Y/4 - Y/100 + Y/400 + 31 * MonthProblem/12) % 7 )

Related Q&A May You Like

  1. ValueError: cannot reindex from a duplicate axis in Python
  2. ValueError: Cannot convert non-finite values (NA or inf) to integer in Python
  3. ModuleNotFoundError: No module named 'pandas' in Python
  4. How to print WITHOUT New line in Python using print method?
  5. How to print a new line in Python 3 with a long string?
  6. Short command to check python version in Linux or Window?
  7. SyntaxError: invalid character in identifier in Python
  8. ImportError: No module named 'ConfigParser' in Python
  9. ModuleNotFoundError: No module named 'numpy' in Python 3.x
  10. ImportError: No module named matplotlib.pyplot in Python
  11. Error divide by zero encountered in double_scalars in Python
  12. PermissionError: [Errno 13] Permission denied in Python
  13. ImportError: No module named MySQLdb in Python Django
  14. MongoDB throw certificate verify failed: certificate has expired in Python
  15. ImportError: No module named 'mysql' in Python Django
Leave An Answer
* NOTE: You need Login before leave an answer

* Type maximum 2000 characters.

* All comments have to wait approved before display.

* Please polite comment and respect questions and answers of others.

Most Quizs Popular

Start Test

Javascript - Functions
Start Test

Asp.Net Core - Exam test 01
Start Test

Asp.Net Core - Exam test 02
Start Test

C# - Level Beginner

Popular Tips

This site uses cookies so that we can remember you and understand how you interact with our website. This allows us to improve and customize your browsing experience. See our Cookies Policy.
X Close