Typeerror nonetype object is not iterable python как исправить

Int Object is Not Iterable – Python Error [Solved]

Kolade Chris

If you are running your Python code and you see the error “TypeError: ‘int’ object is not iterable”, it means you are trying to loop through an integer or other data type that loops cannot work on.

In Python, iterable data are lists, tuples, sets, dictionaries, and so on.

In addition, this error being a “TypeError” means you’re trying to perform an operation on an inappropriate data type. For example, adding a string with an integer.

Today is the last day you should get this error while running your Python code. Because in this article, I will not just show you how to fix it, I will also show you how to check for the __iter__ magic methods so you can see if an object is iterable.

How to Fix Int Object is Not Iterable

If you are trying to loop through an integer, you will get this error:

count = 14 for i in count: print(i) # Output: TypeError: 'int' object is not iterable 

One way to fix it is to pass the variable into the range() function.

In Python, the range function checks the variable passed into it and returns a series of numbers starting from 0 and stopping right before the specified number.

The loop will now run:

count = 14 for i in range(count): print(i) # Output: 0 # 1 # 2 # 3 # 4 # 5 # 6 # 7 # 8 # 9 # 10 # 11 # 12 # 13 

Another example that uses this solution is in the snippet below:

age = int(input("Enter your age: ")) for num in range(age): print(num) # Output: # Enter your age: 6 # 0 # 1 # 2 # 3 # 4 # 5 

How to Check if Data or an Object is Iterable

To check if some particular data are iterable, you can use the dir() method. If you can see the magic method __iter__ , then the data are iterable. If not, then the data are not iterable and you shouldn’t bother looping through them.

perfectNum = 7 print(dir(perfectNum)) # Output:['__abs__', '__add__', '__and__', '__bool__', '__ceil__', '__class__', '__delattr__', '__dir__', '__divmod__', '__doc__', '__eq__', '__float__', '__floor__', '__floordiv__', '__format__', '__ge__', '__getattribute__', '__getnewargs__', '__gt__', '__hash__', '__index__', '__init__', '__init_subclass__', '__int__', '__invert__', '__le__', '__lshift__', '__lt__', '__mod__', '__mul__', '__ne__', '__neg__', '__new__', '__or__', '__pos__', # '__pow__', '__radd__', '__rand__', '__rdivmod__', '__reduce__', '__reduce_ex__', '__repr__', '__rfloordiv__', '__rlshift__', '__rmod__', '__rmul__', '__ror__', '__round__', '__rpow__', '__rrshift__', '__rshift__', '__rsub__', '__rtruediv__', '__rxor__', '__setattr__', '__sizeof__', '__str__', '__sub__', '__subclasshook__', '__truediv__', '__trunc__', '__xor__', 'bit_length', 'conjugate', 'denominator', 'from_bytes', 'imag', 'numerator', 'real', 'to_bytes'] 

The __iter__ magic method is not found in the output, so the variable perfectNum is not iterable.

jerseyNums = [43, 10, 7, 6, 8] print(dir(jerseyNums)) # Output: ['__add__', '__class__', '__contains__', '__delattr__', '__delitem__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__', '__gt__', '__hash__', '__iadd__', '__imul__', '__init__', '__init_subclass__', '__iter__', '__le__', '__len__', '__lt__', '__mul__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__reversed__', '__rmul__', '__setattr__', '__setitem__', '__sizeof__', '__str__', '__subclasshook__', 'append', 'clear', 'copy', 'count', 'extend', 'index', 'insert', 'pop', 'remove', 'reverse', 'sort'] 

The magic method __iter__ was found, so the list jerseyNums is iterable.

Conclusion

In this article, you learned about the “Int Object is Not Iterable” error and how to fix it.

You were also able to see that it is possible to check whether an object or some data are iterable or not.

If you check for the __iter__ magic method in some data and you don’t find it, it’s better to not attempt to loop through the data at all since they’re not iterable.

Как исправить ошибку NoneType object is not iterable?

Задача:
Сгенерировать десять списков из случайных чисел. Вывести их и сумму их элементов на экран. Найти среди них один с максимальной суммой элементов. Указать какой он по счету, повторно вывести этот список и сумму его элементов. Заполнение списка и подсчет суммы его элементов оформить в виде отдельных функций. Ошибка:

 Traceback (most recent call last): File "C:\Python34\5.16.py", line 20, in g = max(d) TypeError: 'NoneType' object is not iterable 

import random n = int(input("Введите кол-во возможных случайных:")) b = int(input("Введите диапазон случайных значений:")) def func_1(n,b): d = [[random.randrange(b) for i in range(n)] for i in range(10)] print("Исходные 10 списков:",d) func_1(n,b) def func_2(n,b): d = [[sum(random.randrange(b) for i in range(n))] for i in range(10)] print("сумма элементов в каждом из 10 списков:",d) func_2(n,b) d = func_2(n,b) g = max(d) print("Максимальная сумма элементов:",g) 

TypeError: ‘NoneType’ object is not iterable in Python

The TypeError: ‘NoneType’ object is not iterable error message is raised when you are trying to iterate over an object that has a value of None , which is not iterable. This means that you are trying to use a for loop or some other kind of iteration on an object that has a value of None , which is not allowed in Python.

Here’s an example of code that will raise this error:

items = None try: for item in items: print(item) except Exception as e: print(e)

This code will raise the TypeError: ‘NoneType’ object is not iterable error because the items variable has a value of None , which is not iterable.

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To fix this error, you need to make sure that the object you are trying to iterate over is a valid iterable object, such as a list, a tuple, or a string. You can also use an if statement to check if the object is None before attempting to iterate over it.

items = None if items is not None: for item in items: print(item) print("done without error")

This code will not raise the TypeError error because the if statement will prevent the for loop from being executed if items is None .

Related Resources

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• Does Python have a ternary conditional operator?
• What are metaclasses in Python?
• How to iterate over rows in a DataFrame in Pandas
• Convert bytes to a string
• «Least Astonishment» and the Mutable Default Argument
• Why is «1000000000000000 in range(1000000000000001)» so fast in Python 3?
• How do I reverse a string in Python?
• How do I write JSON data to a file?

Ошибка ‘NoneType’ object is not iterable в программе ‘Phyton’

Программа проходит все тесты в codewars, но на заключительном этапе выдает следующую ошибку:

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Traceback (most recent call last):
File «/workspace/default/.venv/lib/python3.10/site-packages/codewars_test/test_framework.py», line 112, in wrapper
func()
File «/workspace/default/tests.py», line 21, in fixed_tests
test.assert_equals(remove_rotten(tst[0]), tst[1], f»Input = «)
File «/workspace/default/solution.py», line 4, in remove_rotten
bag_of_fruits = [x.replace(‘rotten’, ») for x in bag_of_fruits]
TypeError: ‘NoneType’ object is not iterable