Problem You have a string which you might have read from an external file. The string contains a significant amount of characters that you would like to automatically replace. Possible Solutions Replacing a single character with another Here’s the output: Switch character in string in list In this example we’ll replace all occurrences of multiple … Read more
In today’s post we would like to show how to easily fix error messages when importing the urllib2 library. The solution is pretty much applicable to any Python development tool of choice: Jupyter Notebook, PyChram, Visual Studio IDE and so forth. What is urllib2? Urllib2 is a Python library that works alongside Python2.X versions. It … Read more
In today’s tutorial we’ll show you two ways to export and save a Numpy array to a text or csv file which you can then further process: Using the Numpy function np.savetxt Using the Pandas library Create example data We’ll start by creating a simple array: Note: Numpy and Pandas are installed by default with … Read more
In today’s tutorial we’ll learn to import Python lists into files. We’ll cover three main use cases: Import list into a new file (could be txt, csv, json or others). Append a list to an existing file. Write multiple lists to a file Write a list of dictionaries to a file Save list to a … Read more
Problem To convert a simple or nested list into a dictionary data object using Python. Solution In this tutorial we’ll focus on usage of dictionary comprehensions in order to add the content of a Python list iterator into a dictionary. 1. Dict from Python list Let’s assume that we have the following list: We can … Read more
Problem To split a provided string into two halves using Python 3. Solution We have many ways to split a provided python string into two halves. Let’s go through the methods with examples to achieve them in this post. Using slice notation method: We can use the len() method and get half of the string. … Read more
Problem We would like to delete automatically appended newlines added to a string using Python 3 code. Solution We have two methods to delete the newline from a string. In this post we’ll discuss each technique and obviously post the required code. Using rstrip() method: The rstrip() method removes any trailing character at the end … Read more
Problem: To export a list or a dictionary to a CSV file using Python code. Solution: CSV stands for Comma Separated Values, is a file format that stores tabular data in plain text, like a database or spreadsheet. Python provides an inbuilt module named CSV to read or write in CSV files. We have two … Read more
Problem We would like to turn upside down a string and print it in reverse mode in Python. Solution We have many different methods to approach to reverse a string in Python. Let’s look at each technique one by one in this post. Using Extended Slicing technique: We can obtain with the reverse of a … Read more
Problem Working with spreadsheets is essential when dealing with data. In this tutorial we would like to show you how to open and read excel worksheets (xls / xlsx file formats) using Python 3. Solution We have two libraries in Python that can help us to work with the excel sheet. We will discuss more … Read more