Author: Arpit Mandliya

In this topic, we will learn to get the second last digit of a number with the help of examples. There can be several ways to get second last digit; here we are discussing some solutions. Using modulo operator Here, we are using modulo and divide operators to find the second last digit. The modulo […]

In this post, we will see about Underscore keyword, which is introduced in java 9. Underscore In Java Underscore(_) is a symbol that is used to combine multi-words in a single identifier sometimes refers to a variable in a programming context. In Java, to create a lengthy variable, we prefer to use underscore (_) such […]

In this post, we will see difference between Scanner and BufferReader in java. Java has two classes that have been used for reading files for a very long time. These two classes are Scanner and BufferedReader. In this post, we are going to find major differences and similarities between the two classes. Introduction Let’s first […]

In this post, we will see how to save DataFrame to a CSV file in Python pandas. You can use DataFrame.to_csv() to save DataFrame to CSV file. We will see various options to write DataFrame to csv file. Syntax of DataFrame.to_csv() [crayon-67899a20ebbc1451956628/] Here, path_or_buf: Path where you want to write CSV file including file name. […]

In this post, we will see how to convert column to float in Pandas. Convert String column to float in Pandas There are two ways to convert String column to float in Pandas. Using asType(float) method You can use asType(float) to convert string to float in Pandas. Here is the syntax: [crayon-67899a20ebd9a600022435/] Here is an […]

In this post, we will see how to get frequency counts of a column in Pandas DataFrame. Sometimes, you might have to find counts of each unique value for the categorical column. You can use value_count() to get frequency counts easily. value_count() returns series object with frequency counts data for a column. Here is sample […]

In this post, we will see how to get Unique Values from a Column in Pandas DataFrame. Sometimes, You might want to get unique Values from a Column in large Pandas DataFrame. Here is a sample Employee data which we will use. Using unique() method You can use Pandas unique() method to get unique Values […]

In this post, we will see how to drop rows in Pandas. You can use DataFrame.drop() method to drop rows in DataFrame in Pandas. Syntax of DataFrame.drop() [crayon-67899a20ec0c6954857671/] Here, labels: index or columns to remove. axis:axis=0 is used to delete rows and axis=1 is used to delete columns. For this post, we will use axis=0 […]

In this post, we will see how to filter Pandas by column value. You can slice and dice Pandas Dataframe in multiple ways. Sometimes, you may want to find a subset of data based on certain column values. You can filter rows by one or more columns value to remove non-essential data. Pandas DataFrame sample […]