Shubham SayonOverview Problem: How to choose a file starting with a given string? Example: Consider that we have a directory with files as shown below. How will you select the files starting with “001_Jan“? Python Modules Cheat Sheet To Choose A File Starting With A Given String Choosing a file starting with a given string is … Read more
Summary: The struct module in Python, taken from the C programming language, lets you convert bytes to and from floating point numbers. [toc] Problem: How to convert bytes to floating point numbers? A quick look at the solution: A Brief Introduction to Struct The struct module has three main methods for data conversion: unpack(), pack() … Read more
Summary: The following approaches will help you to fill a column with one value in Pandas: df[‘col_name’] = “value” df.insert(index, ‘col_name’, ‘value’) df.loc[:, ‘col_name’] = ‘value’ df = df.assign(‘col_name’=’value’) Introduction Problem Formulation: How do I fill a column with one value in Pandas? Example: Let’s consider that we have a DataFrame as shown below: Output: … Read more
[toc] Introduction After scraping huge chunks of data, you need to store them in a proper format. You may want to store the data directly into a text file, or you may opt to store it in a more structured way in a csv file or an excel sheet. You may otherwise want to store … Read more
Summary: df2 = pd.DataFrame(index=df1.index) can be used to to create an empty DataFrame. It will not have any columns but just an index which is the same as in the already given DataFrame, i.e., df1. Introduction Problem Statement: How to create an empty data frame with an index from another data frame? Example: Let’s consider … Read more
You want to plot a series of data with unique styles. You need to pick various line styles from a list but not sure how to get started. This tutorial will help you out. Yes, there is a list of line styles in matplotlib. To get the list, import the lines from the matplotlib library. … Read more
❖ Disclaimer: This tutorial considers that you have the basic knowledge of web scraping. The purpose of this article is to educate you on how to scrape content from websites with pagination. The examples and theories mentioned in this tutorial are solely for educational purposes and it is considered that you will not misuse them. In case … Read more
Summary: You are recommended to use the pytz library because of its efficiency and effectiveness in displaying time in a different time zone in Python. However, it would be best to understand the datetime module because it plays a massive role in date and time manipulation. Introduction Displaying the time in a different time zone can be … Read more
Summary: The type() function and the __class__ property enables us to determine the type of a Python variable. Problem Statement: Determining the type of a variable in Python. Determining the data type of a variable plays a vital role in programming. Every variable is capable of storing different types of data, and each type has … Read more
Problem Statement: Selecting rows from a Dataframe based on the column values. Introduction DataFrame (A Quick Recap) A DataFrame is a 2-dimensional data structure that is generally immutable and heterogeneous. It has labelled axes – rows and columns. A Pandas Dataframe comprises three parts: data, rows, and columns. Now let’s create a Dataframe. We are … Read more
❖ Disclaimer: This tutorial considers that you have the basic knowledge of web scraping. The purpose of this article is to educate you on how to rotate proxies and avoid being blocked while web scraping. The examples and theories mentioned in this tutorial are solely for educational purposes and it is considered that you will not misuse … Read more
This article will look at different methods to save a plot to an image file instead of displaying it using Matplotlib. Matplotlib is a plotting library in Python that is used to create figures, shapes, and graphs. Note: Before diving into the methods to save the plot to an image file, instead of displaying it using … Read more