Summary: When working with Python dictionaries, in some cases you may want to access a specific value of a certain item, this is where the dict.get() method comes in handy. Definition: Python’s dict.get() method expects a key argument. If the specified key is in the dictionary, the method will output the value associated with the … Read more
📖 Summary: There are many different ways to copy the dictionary data structure objects in Python. In this tutorial, I will show you the built-in dict.copy() method, which is a very useful method for copying dictionaries. Description Whenever the dict.copy() method is applied to a dictionary, a new dictionary is made, which contains a copy … Read more
Summary: The dictionary data structure has many useful methods, one of these methods is the dict.items() method. To be able to iterate and show the dictionary elements, the Python dictionary items() method does this functionality. The dict.items() method shows the elements taken up by a dictionary as a list of key-value tuples. Definition: The dict.items() … Read more
Overview In Python, there are different strategies to create, open, close, read, write, update and delete the files. It permits the users to deal with the files, i.e., read and write, alongside numerous other file handling operations. In this article, we are going to look at the various methods to write text in a line … Read more
The method dict.fromkeys() is a very useful method for creating new dictionaries from a given iterable of keys. Definition: dict.fromkeys() is a method that inputs keys and maybe an optional value, and outputs a dictionary with the specified keys, that are mapped either to optionally specified values or to the default None value. dict.fromkeys() Syntax … Read more
[toc] remove(), pop() and del can all be used to delete items from the list in Python. However, there are some underlying differences between these three functions with respect to the way they operate, error modes, and computational complexities. Let us try to understand the differences between the three and when to use them. remove() … Read more
[toc] There are various modules that can be easily used to delete a file or folder in Python. In this article, we are going to look at the various methods used to delete a file or folder in Python. Method 1: The os module A Quick Recap to the OS Module:The OS module is a … Read more
[toc] Problem Statement: How to separate the items of a list in Python using tab as the delimiter? Example: The following example demonstrates an example of the given problem statement. The problem is self-explanatory. Hence, without wasting too much time, let’s dive into the various ways of solving this problem. Method 1: Using Escape Sequence … Read more
Problem Statement: How to fix the Python error – “Import error: No module named urllib2” ? A Gentle Introduction URL stands for Uniform Resource Locator. Basically, URL is used to identify a resource on the internet. In order to fetch an URL from the internet and use the data within the URL, the urllib2 standard … Read more
[toc] Introduction Problem Statement: How to find the full path of the currently running Python interpreter? There are different ways to find the full path of Python interpreters. But first, let’s get the basics out of our way before we unearth the solution to our problem statement. So, what’s a Python Interpreter? This might be … Read more
Syntax pandas.melt(frame, id_vars=None, value_vars=None, var_name=None, value_name=’value’, col_level=None, ignore_index=True) Return Value The return value for the melt() function is an unpivoted DataFrame. Background Direct quote from the Pandas Documentation website: “This function massages a DataFrame into a format where one or more columns are identifier variables (id_vars). While all other columns are considered measured variables (value_vars), … Read more
File handling can be a tricky area to deal with while you are scripting in Python. There are numerous occasions wherein we need to work with files and folders from within the Python script. Thus, Python facilitates us with numerous file operations that makes life easier for us when we come across such situations. One … Read more