Python is a general-purpose, high-level programming language created by Guido van Rossum and first released in 1991. Python is designed with the strong advantage of being easy to read, learn, and remember.

“Cannot read pickle file in Cloud Run App. TypeError: cinit() takes at least 2 positional arguments in Python” is a common error that can appear in various ways. This article will mention some of the solutions to this error. Continue reading.

How To Resolve The Error: Cannot read pickle file in Cloud Run App. TypeError: cinit() takes at least 2 positional arguments in Python?

You are loading the pickle file into your Python project, but your traceback shows the following error.

File "pandas/_libs/internals.pyx", line 572, in pandas._libs.internals.BlockManager.__cinit__: TypeError: __cinit__() takes at least 2 positional arguments (0 given) at <module> (/app/src/api/util.py:25)

at <module> (/app/src/api/main.py:8) at

    _call_with_frames_removed (<frozen importlib._bootstrap>:219) at exec_module (<frozen importlib._bootstrap_external>:728) 

at _load_unlocked (<frozen importlib._bootstrap>:677) 

Surprisingly, you were able to repair it by employing some of the methods listed below.

Approach 1: Downgrade Pandas version

You need to revert Pandas to the previous version, and your problem was resolved. You have to run the command below to downgrade the Pandas version.

pip uninstall pandas

pip install pandas==1.2.5

Approach 2: Update the Pandas version

The bug has been fixed in Pandas 1.3.1. So update Pandas and use the pickle load as defined below.

You may replace this line.

pickle.load()

In Pandas 1.3.1, this is the case.

pandas.read_pickle()

Now we are sure that your error will be fixed.

Learn more about pickle file

What type of information can be stored in a pickle?

Here are the things you can find in the store for pickle modules:

1. All native datatypes Python supports: booleans floating point numbers, ints complex numbers, strings bytes , arrays of byte data and none.
2. Dictionary sets, tuples and lists and sets that include any mix of the native types of data.
3. Lists, tuples and dictionaries and sets that include any combination of lists, tuples sets, and dictionaries that contain the full range of native data types (and and so on, up as long as they are nestable to the maximum degree of nesting that Python can support).
4. Classes, functions and classes in instances (with cautions).

Conclusion

We hope you enjoyed our interesting article about this error. By following these steps, we know that you can quickly resolve your error: Cannot read pickle file in Cloud Run App. TypeError: cinit() takes at least 2 positional arguments in Python! 

If you have any further questions about resolving this syntax error, please leave them in the comments section below. Thank you for your time!