Blog_Banner_Asset
    Homebreadcumb forward arrow iconBlogbreadcumb forward arrow iconData Sciencebreadcumb forward arrow iconPython Requests Module Guide: How to Use Requests Library in Python?

Python Requests Module Guide: How to Use Requests Library in Python?

Last updated:
26th Mar, 2020
Views
Read Time
7 Mins
share image icon
In this article
Chevron in toc
View All
Python Requests Module Guide: How to Use Requests Library in Python?

When you are working on the web, for business or personal purposes, you are likely to look for some information. Or you may want to use a website for viewing videos, uploading data or checking social media. To get access to all these resources on the Internet, you have to send a request through your browser to the Internet sever.

HTTP (Hypertext Transfer Protocol) is the set of rules that enable communication between a client and a server over the Internet. While programming in Python, you can make these requests using a module called requests. To gain expertise in python, check out our data science courses. 

In this article, we will learn the basics of the Python requests module.

Python Requests module

The requests module in Python allows you to exchange requests on the web. It is a very useful library that has many essential methods and features to send HTTP requests. As mentioned earlier, HTTP works as a request-response system between a server and a client. Your web browser may be the client, and the system that hosts the site you want to access is the server. Check out all important python libraries.

When you are looking to send a request to a server, there are two methods that you will come across:

  • GET – This method is used for requesting data from a server.
  • POST – This method is used for submitting some data to the server for processing it.

The Python requests module has a simple API that you can use for handling all these requests. It offers you many interesting features, such as passing parameters within URLs, adding headers, sending custom headers and much more. 

Learn More: Python Modules You Should Know About

To begin working with the requests module, the first step is to install the module in Python. To do so, type in the following code in Python:

$ pip install requests

In case you want to use Pipenv, a Python packaging tool for installing the requests module, type in the following code:

$ pipenv install requests

After installing the module, you can use it within your programs by importing it. Use the following code:

import requests

Now, let us understand the most important methods of the python requests module – GET and POST.

GET Request

This method is used for sending a GET request to a URL. This indicates that you are looking to obtain data from a resource on the web. The basic syntax is:

requests.get(url, params={key: value}, args)

Here, url is the URL of the website where you want to send the request. The params is a dictionary or a list of tuples used to send a query string. The args can be any one or more of the various named arguments (optional) offered by the GET method. And, these are:

  • allow_redirects – This is a Boolean value used to enable or disable redirection. Default value: True 
  • auth – This is a tuple for enabling an HTTP authentication. Default value: None
  • cert – This can be a tuple or a string for mentioning a cert file or key. Default value: None
  • timeout – It is can be a tuple or a number that indicates the number of seconds to wait for the client to establish a connection or before sending a response. Default value: None
  • verify – This is a string or a Boolean value that indicates the server’s TLS certificate verification. The default value is True. 
  • cookies – This is a dictionary of cookies that you want to send to the specified URL. Default value: None
  • headers – This is a dictionary containing HTTP headers that you wish to send to a URL. Default value: None
  • stream – It is a Boolean value True or False that indicates whether the response should be streamed (True) or immediately downloaded (False). Default value: False
  • proxies – This is a dictionary of the protocol for the proxy URL. Default value: None

Learn More: Python Libraries for Machine Learning

 

After successfully sending the GET request, the method will return a requests.Response object. This object stores the response that is obtained from the server. You can store the result of the get() method in a variable. Then, you can examine the details of this response. The important properties that help you in this regard are as follows:

  • response.content – This gives you the content of the data of the response.
  • response.status_code – This gives you the status of your request. For example, 200 OK means your request was successful, but 404 NOT FOUND means your request could not locate the resource for you.
  • response.cookies – This is used for obtaining a CookieJar object having all the cookies you got from the server.

 

POST Request

You can send some information to a server using the post() method. The basic syntax for the request is:

requests.post(url, data={key: value}, json={key: value}, args)

Some of the important parameters are:

  • url – This is the URL where you want to send some data. This is a mandatory parameter.
  • data – This is an optional parameter that specifies a dictionary, file object or tuple you want to send to the URL.
  • json – This is the JSON object to be sent to the URL.

Read our popular Data Science Articles

args can be any of the different named arguments, such as:

  • upGrad’s Exclusive Data Science Webinar for you –

    How upGrad helps for your Data Science Career?

    files

    – This is a dictionary of files for sending to the URL.

  • headers – A dictionary of HTTP headers to send to the specified URL.
  • cookies – This indicates the dictionary of cookies that you may want to send.

Just like get(), the post() method also returns a requests.Response object.

Explore our Popular Data Science Courses

Wrapping Up

The python requests module tutorial above will assist you in making basic server requests. One thing to keep in mind is that the get() method is less secure than post(). This is because in get(), the parameters are passed through the URL. So, sensitive information, such as passwords may be exposed. Thus, use post() in situations where passwords or important information needs to be exchanged.

Top Data Science Skills to Learn

If you are curious to learn about Python, data science, check out IIIT-B & upGrad’s Executive PG Programme in Data Science which is created for working professionals and offers 10+ case studies & projects, practical hands-on workshops, mentorship with industry experts, 1-on-1 with industry mentors, 400+ hours of learning and job assistance with top firms.

Profile

Rohit Sharma

Blog Author
Rohit Sharma is the Program Director for the UpGrad-IIIT Bangalore, PG Diploma Data Analytics Program.

Frequently Asked Questions (FAQs)

1What is the use of the Request module in Python?

For making HTTP requests to any specified URL, the Requests library is utilized in Python. There are several inbuilt functionalities in Python for handling both request and response.

In order to make an HTTP request to the specified URL, the Python Requests module is used with the help of different requests like HEAD, GET, PATCH, POST, and PUT. The main reason behind sending an HTTP request is to either retrieve data from the server or push certain data to the server. We can say that a request will act as a bridge between the client and the server for sending and receiving requests. All 5 request types are used for different purposes as per the requirements.

2What are the 3 parts of any response message?

All the HTTP messages are simple and formatted blocks of data. Every message will consist of either the request message from the client-side or the response message from the server-side. Every HTTP message is divided into 3 portions:

1. A starting line to describe the message.
2.A block of headers that consist of all the attributes.
3. An optional body portion containing necessary data to be transmitted.

The URL in any HTTP message refers to the address where the resources are located. On the other hand, the protocol will refer to the HTTP protocol that has to be used for fetching the information.

3What does the POST method do in Python?

Usually, the POST method is utilized in forms when the data has to be sent from the forms to the server for updating the existing data in the servers. The requests module provides the POST method that can directly send the data to the server with the help of the URL and values of the parameters. It is a more likely request method used for submitting any web form or uploading any file.

Explore Free Courses

Suggested Blogs

4 Types of Trees in Data Structures Explained: Properties & Applications
61669
In this article, you will learn about the Types of Trees in Data Structures with examples, Properties & Applications. In my journey with data stru
Read More

by Rohit Sharma

31 May 2024

Searching in Data Structure: Different Search Methods Explained
40549
The communication network is expanding, and so the people are using the internet! Businesses are going digital for efficient management. The data gene
Read More

by Rohit Sharma

29 May 2024

What is Linear Data Structure? List of Data Structures Explained
54895
Data structures are the data structured in a way for efficient use by the users. As the computer program relies hugely on the data and also requires a
Read More

by Rohit Sharma

28 May 2024

4 Types of Data: Nominal, Ordinal, Discrete, Continuous
318421
Summary: In this Article, you will learn about what are the 4 Types of Data in Statistics. Qualitative Data Type Nominal Ordinal Quantitative Data
Read More

by Rohit Sharma

28 May 2024

Python Developer Salary in India in 2024 [For Freshers & Experienced]
909138
Wondering what is the range of Python developer salary in India? Before going deep into that, do you know why Python is so popular now? Python has be
Read More

by Sriram

21 May 2024

Binary Tree in Data Structure: Properties, Types, Representation & Benefits
89538
Data structures serve as the backbone of efficient data organization and management within computer systems. They play a pivotal role in computer algo
Read More

by Rohit Sharma

21 May 2024

Data Analyst Salary in India in 2024 [For Freshers & Experienced]
23540
Summary: In this Article, you will learn about Data Analyst Salary in India in 2024. Data Science Job roles Average Salary per Annum Data Scient
Read More

by Shaheen Dubash

20 May 2024

Python Free Online Course with Certification [2024]
136176
Summary: In this Article, you will learn about python free online course with certification. Programming with Python: Introduction for Beginners Le
Read More

by Rohit Sharma

20 May 2024

13 Interesting Data Structure Projects Ideas and Topics For Beginners [2023]
249816
 In the world of computer science, understanding data structures is essential, especially for beginners. These structures serve as the foundation for
Read More

by Rohit Sharma

20 May 2024

Schedule 1:1 free counsellingTalk to Career Expert
icon
footer sticky close icon