If you are getting the Error “TypeError: a bytes-like object is required, not ‘str'” in Python while coding, let’s follow this article. We will give you some ways to fix it.
What is the cause of this error?
The TypeError occurs when you apply a specific operation to the value of the incorrect type.
Look at the example below to learn more about this problem.
print('Hello everyone,' + ' I am crvt' + 4722 + '.')
Output
print('Hello everyone,'+' I am crvt'+4722+'.')
TypeError: can only concatenate str (not "int") to str
This Error occurred when you used the operator ‘+’ to add str and int types.
This Error generally occurs when you open a file in binary format instead of text format.
Look at the example below:
# Create a file named 'data' to write the file's content createdFile = open("data.txt", "w+") createdFile.write("Hello\n") createdFile.write("everyone\n") createdFile.write("I am crvt4722.\n") createdFile.write("Learn To Share IT") createdFile.close() # Reading data.txt file by the binary format with open("data.txt", "rb") as file: data = file.readlines() for x in data: if "Hello" in x: print(x)
Output
Traceback (most recent call last):
File "code.py", line 14, in <module>
if "Hello" in x:
TypeError: a bytes-like object is required, not 'str'
Fixing error “TypeError: a bytes-like object is required, not ‘str'” in Python
Solution 1: Reading file in the text format
Syntax:
Parameters:
- fileName: The name or the path of the file.
Let’s check the following code:
# Create a file named 'data' to write the file's content createdFile = open("data.txt", "w+") createdFile = open("data.txt", "w+") createdFile.write("Hello\n") createdFile.write("everyone\n") createdFile.write("I am crvt4722.\n") createdFile.write("Learn To Share IT") createdFile.close() # Reading data.txt file by the binary format with open("data.txt", "r") as file: data = file.readlines() for x in data: if "Hello" in x: print(x)
Output:
Hello
Solution 2: Converting to byte objects
Using the prefix ‘b’ before the String.
Syntax:
b'content'
Parameters:
- content: The content of the String.
This is how we do it to fix error:
# Create a file named 'data' to write the file's content createdFile = open("data.txt", "w+") createdFile.write("Hello\n") createdFile.write("everyone\n") createdFile.write("I am crvt4722.\n") createdFile.write("Learn To Share IT") createdFile.close() # Reading data.txt file in binary format with open("data.txt", "rb") as file: data = file.readlines() for x in data: if b"Hello" in x: print(x)
Output
b'Hello\n'
Summary
These solutions can help you fix the Error: TypeError: a bytes-like object is required, not ‘str’ In Python. To fix this problem, you can read the file in the text format or convert it to byte Objects. Choose the solution that is the most suitable for you. We hope this tutorial is helpful to you. Have an exciting learning experience. Thanks!
Maybe you are interested:
- typeerror: can only concatenate str (not “int”) to str
- TypeError: cannot unpack non-iterable int object in Python
- TypeError: cannot unpack non-iterable NoneType object
- TypeError: Descriptors cannot not be created directly. If this call came from a _pb2.py file, your generated code is out of date and must be regenerated with protoc >= 3.19.0.

My name is Thomas Valen. As a software developer, I am well-versed in programming languages. Don’t worry if you’re having trouble with the C, C++, Java, Python, JavaScript, or R programming languages. I’m here to assist you!
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