Python syntax error

Question

How can I fix it without syntax error ???
https://code.sololearn.com/cFB689ThM9xK/?ref=app

Answer 1

There was a syntax error because the program already knew the data type of the variable so it was confused by the str. You also didn’t need the brackets around pi_string when you were declaring it.
pi_string wasn’t actually a string because 3.1415926 wasn’t inbetween quotation marks (you made it an integer) to make it an actually string you would do this-
pi_string="3.1415926"

Answer 2

pi_string = str(3.1415926)

Answer 3

pi_string="3.1415926"