Tag: python_interview
Python built-in utility that checks if the given object appears callable. callable()
In Python, the callable() function is a built-in utility that checks if the given object appears callable. A callable object…
Efficiently iterating over rows in a Pandas dataframe: Methods and examples
This article delves into different techniques to loop over DataFrame rows, their use cases, and some best practices. Sample dataframe:…
Converting string columns in Pandas dataframe to Float in Pandas dataframe
While working with data in Pandas, it’s common to encounter columns formatted as strings when they should be numerical. This…
How to implement Outer Joins in Pandas.
Join operations are fundamental to data manipulation and analysis. Among these, the outer join stands out for its ability to…
Converting Pandas dataframe to dictionary – Detailed examples included
This article will guide you through the process of converting a Pandas DataFrame to a dictionary with clear examples. Sample…
Converting NumPy arrays to Pandas DataFrame – Examples included
Understanding data structures in Python is crucial for data analysis. Two popular libraries, NumPy and Pandas, offer powerful tools for…
Merging dataFrames on multiple columns with Python Pandas
In this article, we’ll explore how to merge two DataFrames based on multiple columns, ensuring seamless integration of datasets. Merging…
How to check if a column exists in a Pandas DataFrame
One frequent operation when working with DataFrames is determining if a specific column exists. This article guides you through multiple…
Renaming axis and index in pandas using rename_axis() and index.rename()
In pandas, there are often scenarios where you may need to rename the axes or the index of a DataFrame…
Setting the Index name for a DataFrame in pandas
In the pandas library, the DataFrame is a two-dimensional labeled data structure with columns that can be of different types….
