TypeError: X takes no keyword arguments in Python [Solved]

# Table of Contents

1. TypeError: X takes no keyword arguments in Python
2. TypeError: str.replace() takes no keyword arguments in Python
3. TypeError: dict.get() takes no keyword arguments in Python

# TypeError: X takes no keyword arguments in Python

The Python "TypeError: X takes no keyword arguments" occurs when we pass a keyword argument to a function that only takes positional arguments.

To solve the error, pass positional arguments to the function.

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def get_name(first, last):
    return first + ' ' + last


# ⛔️ Calling the function with keyword arguments
print(get_name(first='bobby', last='hadz'))

# ✅ Calling the function with positional arguments
print(get_name('bobby', 'hadz'))

The first call to the get_name function uses keyword arguments and the second call uses positional arguments.

Keyword arguments take the form of argument_name=value and positional arguments are passed directly by value.

THe get_name function in the example can be called both ways without any issues.

Instead, you should pass positional arguments to these methods.

Here are 2 examples of how the error occurs with built-in methods and how to solve it.

# Table of Contents

1. TypeError: str.replace() takes no keyword arguments in Python
2. TypeError: dict.get() takes no keyword arguments in Python

# TypeError: str.replace() takes no keyword arguments in Python

The "TypeError: str.replace() takes no keyword arguments" occurs when we pass keyword arguments to the str.replace() method.

To solve the error, pass only positional arguments to replace(), e.g. my_str.replace('old', 'new').

Here is an example of how the error occurs.

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my_str = 'apple, apple, banana'

# ⛔️ TypeError: str.replace() takes no keyword arguments
result = my_str.replace(old='apple', new='kiwi')

The error was caused because we passed keyword arguments to the replace() method.

The replace() method takes only positional arguments.

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my_str = 'apple, apple, banana'

result = my_str.replace('apple', 'kiwi')

print(result) # 👉️ kiwi, kiwi, banana

The str.replace() method returns a copy of the string with all occurrences of a substring replaced by the provided replacement.

The method takes the following parameters:

Note that the method doesn't change the original string. Strings are immutable in Python.

If you need to use a regular expression when replacing characters in a string, use the re.sub method.

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import re


my_str = '1apple, 2apple, 3banana'

result = re.sub(r'[0-9]', '_', my_str)

print(result)  # 👉️ _apple, _apple, _banana

The re.sub method returns a new string that is obtained by replacing the occurrences of the pattern with the provided replacement.

If the pattern isn't found, the string is returned as is.

# TypeError: dict.get() takes no keyword arguments in Python

The "TypeError: dict.get() takes no keyword arguments" occurs when we pass keyword arguments to the dict.get() method.

To solve the error, only pass positional arguments to dict.get(), e.g. my_dict.get('my_key', 'default').

Here is an example of how the error occurs.

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my_dict = {'name': 'Bobby Hadz', 'age': 30}

# ⛔️ TypeError: dict.get() takes no keyword arguments
result = my_dict.get('name', default='')

The error was caused because we passed a keyword argument to the dict.get() method.

The dict.get() method takes only positional arguments.

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my_dict = {'name': 'Bobby Hadz', 'age': 30}

print(my_dict.get('name', ''))  # 👉️ "Alice"

print(my_dict.get('another', 'default'))  # 👉️ 'default'

The dict.get() method returns the value for the given key if the key is in the dictionary, otherwise a default value is returned.

The method takes the following 2 parameters:

Both of the arguments the dict.get() method takes are positional.

You can't pass a keyword argument to the method.

If the provided key exists in the dict object, its value is returned, otherwise, the get() method returns the supplied default value or None if one wasn't provided when calling dict.get().

# Additional Resources

You can learn more about the related topics by checking out the following tutorials:

• SyntaxError: positional argument follows keyword argument
• TypeError: missing 1 required positional argument: 'self'
• Replacement index 1 out of range for positional args tuple