Typeerror collections.ordereddict object is not callable

Typeerror: ‘collections.ordereddict’ object is not callable

by

Looking for a solution to fix Typeerror: ‘collections.ordereddict’ object is not callable in your code?

Then, you are in the right place.

In this article, we will discuss what Typeerror: ‘collections.ordereddict’ object is not callable means, give the possible causes of this error, and provide solutions to resolve this error.

So first, let us know what this error means.

What is Typeerror: ‘collections.ordereddict’ object is not callable?

This error message “Typeerror: ‘collections.ordereddict’ object is not callable” indicates that you are trying to call a method or function on an object of the “collections.OrderedDict” class, but the object is not callable.

This could happen if you accidentally try to call the object itself as if it were a function, or if you try to call a method that does not exist for that object.

collections.ordereddict

The “collections.OrderedDict” is a built-in Python class that is part of the “collections” module.

It is a dictionary-like container that maintains the order of the keys in which they were inserted.

In other words, it is similar to a regular Python dictionary, but with the added ability to remember the order in which key-value pairs were added.

Now let us know how and why this Typeerror: ‘collections.ordereddict’ object is not callable occurs.

How does Typeerror: ‘collections.ordereddict’ object is not callable occurs?

The error “Typeerror: ‘collections.ordereddict’ object is not callable” occurs when you try to call an object of the collections.OrderedDict class as if it were a function.

Moreover, the error can occur in Django applications when trying to render a template that includes a paginated list of objects using Django’s built-in {% for %} loop.

This happens if the object list is OrderedDict rather than a list or a queryset.

The Typeerror: ‘collections.ordereddict’ object is not callable can happen for a variety of reasons, such as:

1. Syntax errors:

If you accidentally use incorrect syntax when calling a method or function on an OrderedDict object, you may get the error.

For example:

from collections import OrderedDict

my_dict = OrderedDict()
my_dict('a') # Error, should be my_dict['a'] instead



In this example, we accidentally used parentheses instead of square brackets to access a key in the OrderedDict object, causing a syntax error stating:

TypeError: 'collections.OrderedDict' object is not callable

2. Adding parentheses at the end of the variable name:

By adding parentheses at the end of the variable name the error occurs because we are trying to call the object as if it were a function.

For example:

from collections import OrderedDict

my_ordered_dict = OrderedDict()

my_ordered_dict['apple'] = 1
my_ordered_dict['banana'] = 2
my_ordered_dict['orange'] = 3

my_ordered_dict() # this line would cause the Typeerror

In this example, This would cause the TypeError, since my_ordered_dict is not a function and cannot be called like one.

3. Using an ordered dictionary in a {% for %} loop:

Django’s template language includes a {% for %} loop that can be used to iterate over a list or a queryset of objects and render them in HTML.

If you try to use an ordered dictionary instead of a list or a queryset in the loop, you may get the “Typeerror: ‘collections.ordereddict’ object is not callable” error.

for example:

Python code:

from django.shortcuts import render
from collections import OrderedDict

def my_view(request):
    my_ordered_dict = OrderedDict([('key1', 'value1'), ('key2', 'value2')])
    return render(request, 'my_template.html', {'my_list': my_ordered_dict})

Html code:

<!-- my_template.html -->
{% for item in my_list %}
    {{ item }}
{% endfor %}

In this example, the my_view function returns an ordered dictionary as part of the context data passed to the my_template.html template.

4. Using an ordered dictionary in a view’s context data:

When using class-based views in Django, you can define a get_context_data method to pass additional data to your template context.

If you include an ordered dictionary in the context data, you may get the “Typeerror: ‘collections.ordereddict’ object is not callable” error when trying to render the template.

For example:

from django.views.generic import TemplateView
from collections import OrderedDict

class MyView(TemplateView):
    template_name = 'my_template.html'

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        my_ordered_dict = OrderedDict([('key1', 'value1'), ('key2', 'value2')])
        context['my_list'] = my_ordered_dict
        return context

This example shows a class-based view (MyView) that extends Django’s TemplateView.

The get_context_data method adds an ordered dictionary to the context data passed to the template.

5. Namespace conflict with another function or variable:

Python may mistakenly think you are trying to call your function or variable instead.

If you define a function or variable with the same name as an ordered dictionary in your Django code, then try to call the ordered dictionary.

For example:

from collections import OrderedDict

my_ordered_dict = OrderedDict([('key1', 'value1'), ('key2', 'value2')])

def my_function():
    my_ordered_dict = 'this is not an ordered dictionary'
    my_ordered_dict('key1')  # Raises Typeerror: 'collections.ordereddict' object is not callable

In this example, there is a namespace conflict because the my_function function defines a variable with the same name as the my_ordered_dict ordered dictionary.

Now let us know how to fix this error.

How to solve Typeerror: ‘collections.ordereddict’ object is not callable?

Here are the alternative solutions to fix Typeerror: ‘collections.ordereddict’ object is not callable:

Solution 1: Replace the parentheses with square brackets:

To fix the “Typeerror: ‘collections.ordereddict’ object is not callable” error, you should replace the parentheses with square brackets to access the element of the dictionary.

Here is the updated code for problem 1 above:

from collections import OrderedDict

my_dict = OrderedDict()
my_dict['a'] = 1  # Add a key-value pair to the dictionary
print(my_dict['a'])  # Access the value using square brackets

Solution 2: Remove the parentheses after the variable name:

By removing the parentheses, you will access the ordered dictionary object itself, which can be printed or manipulated using its attributes and methods.

Here is the corrected code:

from collections import OrderedDict

my_ordered_dict = OrderedDict()

my_ordered_dict['apple'] = 1
my_ordered_dict['banana'] = 2
my_ordered_dict['orange'] = 3

print(my_ordered_dict)  # Print the ordered dictionary object

Solution 3: Convert the ordered dictionary to a list:

To fix Typeerror: ‘collections.ordereddict’ object is not callable, you could convert the ordered dictionary to a list before passing it to the template.

Here is the updated code for problem 3 above:

my_ordered_dict = OrderedDict([('key1', 'value1'), ('key2', 'value2')])
my_list = list(my_ordered_dict.items())
return render(request, 'my_template.html', {'my_list': my_list})

Solution 4: Rename the variable in the function

Renaming the variable in the function fixes the error because it removes the namespace conflict between the variable and the ordered dictionary.

Here is the updated code for problem 5 above:

def my_function():
    my_non_dict_var = 'this is not an ordered dictionary'
    my_ordered_dict('key1')  # No longer raises Typeerror

So those are the different solutions that you can use to fix “Typeerror: ‘collections.ordereddict’ object is not callable”.

Hoping that one or more of them helps you resolve the problem regarding the error.

Here are the other fixed Python errors that you can visit, you might encounter them in the future.

Conclusion

To conclude, The error “Typeerror: ‘collections.ordereddict’ object is not callable” occurs when you try to call an object of the collections.OrderedDict class as if it were a function.

Moreover, the error can occur in Django applications when trying to render a template that includes a paginated list of objects using Django’s built-in {% for %} loop.

This happens if the object list is OrderedDict rather than a list or a queryset.

By following the given solution, surely you can fix the error quickly and proceed to your coding project again.

I hope this article helps you to solve your problem regarding a Typeerror stating “‘collections.ordereddict’ object is not callable“.

We’re happy to help you.

Happy coding! Have a Good day and God bless.