What common mistakes have you had to correct in your practice?

In Python development practice, the following common errors often occur:

• Data type errors, such as attempting to perform operations between incompatible types (string and number).
• Scope issues, especially in functions and closures.
• Incorrect use of mutable and immutable objects, leading to unexpected side effects.
• Errors when working with asynchronous code, such as forgotten await or incorrect use of the event loop.
• Exception handling problems, where exceptions are either not handled or handled too broadly.
• File and resource management errors, such as forgotten file closures or incorrect use of context managers.

Example of a typical type error:

value = "123"
number = value + 10  # TypeError: can only concatenate str (not "int") to str

To fix this, convert types to compatible ones:

number = int(value) + 10  # 133