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I am getting an error from this Python code:
with open('names') as f:
names = f.read()
names = names.split('\n')
names.pop(len(names) - 1)
names = shuffle(names)
f.close()
assert len(names) > 100
Error:
Python: TypeError: object of type 'NoneType' has no len()
The assert statement is throwing this error, what am I doing wrong?
665
The Python TypeError: NoneType Object Is Not Iterable error can be avoided by checking if a value is None or not before iterating over it. This can help ensure that only objects that have a value are iterated over, which avoids the error.
The Python "TypeError: object of type 'function' has no len()" occurs when we pass a function without calling it to the len() function. To solve the error, make sure to call the function and pass the result to the len() function.
The Python "TypeError: argument of type 'NoneType' is not iterable" occurs when we use the membership test operators (in and not in) with a None value. To solve the error, correct the assignment of the variable that stores None or check if it doesn't store None .
NoneType in Python is a data type that simply shows that an object has no value/has a value of None . You can assign the value of None to a variable but there are also methods that return None .
shuffle(names) is an in-place operation. Drop the assignment.
This function returns None and that's why you have the error:
TypeError: object of type 'NoneType' has no len()
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