Python: Get and Change the Working Directory
Learn how to use Python to get and change the working directory of your code, using the os library and how to identify error codes.
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Python: Check if a File or Directory Exists
Learn how to use Python to check if a file or a directory exists, using the pathlib and os libraries, including writing conditional checks.
Calculate a Weighted Average in Pandas and Python
Learn how to use Pandas to calculate the weighted average in Python, using groupby, numpy, and the zip function between two lists.
How to Shuffle Pandas Dataframe Rows in Python
Learn how to shuffle a Pandas Dataframe using three different methods, including how to be able to reproduce your shuffle results.
How to Remove Items from Python Sets
In this tutorial, you’ll learn how to remove items from a Python set. You’ll learn how to remove items using the remove method, the discard method, the pop method, and the difference_update method. You’ll learn the differences between each of… Read More »How to Remove Items from Python Sets
Python: Sort a String (4 Different Ways)
Learn how to use Python to sort a string including how to sort strings using the sorted function, with case sensitivity or insensitivity.
Python Multiline Comments (2 Different Options)
Learn how to use Python add multiline comments, both by using single comments on multiple lines and multi-line strings (not as docstrings).
Python Break, Continue and Pass: Python Flow Control
In this tutorial, you’ll learn about Python flow control, using the break, continue, and pass statements. Each of these statements alter the flow of a loop, whether that be a Python while loop or a for loop. Understanding these flow… Read More »Python Break, Continue and Pass: Python Flow Control
Python zfill & rjust: Pad a String in Python
In this tutorial, you’ll learn how to use Python’s zfill method to pad a string with leadering zeroes. You’ll learn how the method works and how to zero pad a string and a number. You’ll also learn how to use… Read More »Python zfill & rjust: Pad a String in Python
Python: Append to a Tuple (3 Easy Ways)
Learn how to use Python to append to a tuple, including tuple concatenation, list conversion, and tuple unpacking in this tutorial.
Calculate and Plot a Correlation Matrix in Python and Pandas
In this tutorial, you’ll learn how to calculate a correlation matrix in Python and how to plot it as a heat map. You’ll learn what a correlation matrix is and how to interpret it, as well as a short review… Read More »Calculate and Plot a Correlation Matrix in Python and Pandas
Pandas: Number of Columns (Count Dataframe Columns)
Learn how to use Python and Pandas to count the number of columns in a dataframe, using counting the number of columns meeting a condition.