You are watching: Typeerror: must be str, not int
Fortunately, Python has a handy built-in function str() which will convert the argument passed in to a string format.
The Wrong Way to Convert a String to an Integer in Python
Programmers coming from other programming languages may attempt to do the following string concatenation, which will produce an error:
age = 18string = "Hello, I am " + age + " years old"You can run this code on repl.it.
The error that shows up is:
Traceback (most recent call last): File "python", line 3, in TypeError: must be str, not intHere, TypeError: must be str, not int indicates that the integer must first be converted to a string before it can be concatenated.
The Correct Way to Convert a String to an Integer in Python
Here"s a simple concatenation example:
age = 18print("Hello, I am " + str(age) + " years old")# Output# Hello, I am 18 years oldYou can run this code on repl.it.
Here"s how to print 1 2 3 4 5 6 7 8 9 10 using a single string:
result = ""for i in range(1, 11): result += str(i) + " "print(result)# Output# 1 2 3 4 5 6 7 8 9 10You can run the code on repl.it.
Here"s a line-by-Line explanation of how the above code works:First of all a variable ‘result’ is assigned to an empty string.The for loop is being used to iterate over a list of numbers.This list of numbers is generated using the range function.so range(1,11) is going to generate a list of numbers from 1 to 10.On each for loop iteration this ‘i’ variable is going to take up values from 1 to 10.On first iteration when the variable i=1,then the variable
I hope you"ve found this helpful. Happy coding.
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