Python

To fix the ImportError: attempted relative import with no known parent package error, you can use the “absolute imports”, “refactor your code”, or “-m flag to run the script as a module”. The ImportError: attempted relative import with no known parent package error occurs when you try to “use a relative import in a Python script … Read more

To fix the “TypeError: can’t multiply sequence by non-int of type ‘float’” error, convert the string into a floating-point number using “round()”, “math.floor()”, or “math.ceil()” function before multiplying it with a float. To multiply a sequence by a user-entered number, you need to convert the input to an integer or float first and then, if … Read more

The legacy-install-failure error with pip install occurs when a Python package cannot be installed in “legacy” mode. This can happen when pip tries to install a package that does not provide a wheel distribution, and the setup.py installation fails for some reason. Here are a few steps you can take to troubleshoot and potentially fix … Read more

The TypeError: vars() argument must have __dict__ attribute error occurs when you try to “call the built-in vars() function on an object that doesn’t have a __dict__ attribute”. The vars() function is used to get an object’s __dict__ attribute, which contains its attributes in the form of a dictionary. To fix this error, check if … Read more

To fix the “ModuleNotFoundError: No module named ‘omegaconf’” error in Python, install the “omegaconf” package using pip: pip install omegaconf. The ModuleNotFoundError: No module named ‘omegaconf’ error occurs when the “omegaconf” module is not installed in your Python environment. Here’s how you can install the omegaconf package: Open a terminal or command prompt. Run the … Read more

To fix the ‘DataFrameGroupBy’ object has no attribute ‘set_index’ error in Pandas, you need to “apply an aggregation function (such as sum(), mean(), etc.)” on the groupby object first, which will return a DataFrame and then you can call the set_index() method on the resulting DataFrame. The error ‘DataFrameGroupBy’ object has no attribute ‘set_index’ occurs … Read more

To add an element to a Python dictionary if a key does not exist, you can use the “dict.setdefault()” method, “dict.get()” method, or a “conditional expression” with the “in” keyword. Method 1: Using the dict.setdefault() The setdefault() method returns the value of a key if it exists. Otherwise, it adds the key with a specified value … Read more

Python classmethod() is a built-in method “used as a decorator to define a class method”. Class methods are bound to the class and not the instance of the object. As a result, they can be called on the class itself or any instance of the class. The first parameter of a class method is a … Read more

To fix the AttributeError: ‘str’ object has no attribute ‘contains’, you can use the “in” operator or “find()” method to check if a substring is present in a given string. Python raises the AttributeError: ‘str’ object has no attribute ‘contains’ when you try to call the contains() method on a string object which does not … Read more

The numpy.fv() function “calculates the future value”. Future cash flows are measured at the discount rate, and the higher the discount rate, the lower the potential cash flow’s present value. Syntax numpy.fv(rate, nper, pmt, fv, when=’end’) This function takes five arguments: rate: This decimal value indicates the interest rate per period. This can be a … Read more

The numpy.clip() function “limits the values in an array between a specified minimum and maximum value”. Any value in the array below the minimum value will be replaced with the minimum value, and any value above the maximum value will be replaced with the maximum value. Syntax numpy.clip(arr, a_min, a_max, out=None, *, where=True, casting=’same_kind’, order=’K’, … Read more