How can I troubleshoot invalid characters in Identifier in Python?

The main reason behind getting the error “invalid character in Identifier Python” in Python is using a variable name or Identifier characters which are not allowed. Such symbols are @,$, or start with a number, etc. 

Here is the Python coding structure given to demonstrate the troubleshooting approach for your specific problem:-

  Username = input(“Enter your username (email address): “)

# Replace invalid characters in the username with an underscore

Username = username.replace(‘@’, ‘_at_’)

Username = username. replace(‘.’, ‘_dot_’)

# Check if the username starts with a number

If username[0].isdigit():

    Username = ‘_’ + username  # Prepend underscore if it starts with a number

This above coding structure utilizes the replace() function to replace the “@” and “.” Symbols with the “at” and “dot” respectively. Moreover, it also prepends an underscore if the username starts with a number to solve the issue in your scenario.

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