To list directories in Python, import the os module and call the os.listdir() function on a specific directory. 💡 Info: The os module provides a way to interact with the operating system. It is part of the standard library within Python 3. You can use the os.path() module to check if each item in the … Read more
Problem Formulation and Solution Overview This article shows how to generate a formatted PDF file from a CSV file using the ReportLab and Pandas libraries in conjunction with slicing. ℹ️ Python offers numerous ways to generate a PDF file. One option is to use the ReportLab library. The article selected the path that used the … Read more
Problem Formulation 💬 Question: Given a binary string in your Python script, such as b’this is a binary string’. How to write the binary string to a file in Python? For example, you may have tried a code snippet like this that will not work with file.write(): Because this yields a TypeError: Traceback (most recent … Read more
Hex String as Binary Data To convert a hex string such as ‘FF0001AF’ to binary data, use the binascii.unhexlify(hex_str) function that returns the binary data represented by the hexadecimal string. Note that this converts two hex string digits to one byte, i.e., hex string ‘F0’ is converted to the byte representation 11110000, or in binary … Read more
Problem Formulation and Solution Overview This article will show you how to import external Python code and use this code in another Python script. To make it more interesting, we have the following running scenario: 👩🏫 Fun Example: Pam, a High School Teacher, wants an easier way to calculate exam totals and produce student averages. … Read more
Problem Formulation and Solution Overview Let’s say, for this article, you have been asked to write Python code that reads a file and displays one (1) character from that file per iteration until all contents have been read in. 💬 Question: How would you write this code? Well, this task can be completed by using … Read more
Problem Formulation and Solution Overview This article will show you how to read and display the first line of a file in Python. For this article, we will work with a flat-text file containing five (5) possible things to do during your lifetime. This file is saved to bucket_list.txt and placed into the current working … Read more
Do you need to create a function that returns a file but you don’t know how? No worries, in sixty seconds, you’ll know! Go! 👇 A Python function can return any object such as a file object. To return a file, first open the file object within the function body, handle all possible errors if … Read more
Problem Formulation and Solution Overview This article will show you how to extract a zip file in Python. A ZIP file is an archive file format that compresses one or more files into one primary location. This file type is known to quickly and easily transfer large amounts of data. Let’s say you have been … Read more
Problem Formulation and Solution Overview This article will show you how to save a flat-text file to another folder in Python. At some point, you may need to write the contents of a flat-text file from one location to another. This can be done in various ways, as shown below in our examples. For this … Read more
Problem Formulation and Solution Overview 💡 This article will show you how to delete a line from a file in Python. To make it more interesting, we have the following running scenario: Rivers Clothing has a flat text file, rivers_emps.txt containing employee data. What happens if an employee leaves? They would like you to write … Read more
Problem Formulation and Solution Overview When a new file or folder is created, it comes with its own set of default permissions. From time to time, you will need to adjust these permissions. To follow this article, download the finxter.csv file and move this file to the current working directory. What are File Permissions? File … Read more