Difference between input() and sys.stdin.readline() Last Updated : 29 Oct, 2021 Summarize Comments Improve Suggest changes Share Like Article Like Report Python is a widely used general-purpose language that can be used for many purposes. Taking input in any language is as important as breathing for humans. Python provides various methods for taking input. However, we all may get confused about how each method is different from one another. In this article, we will discuss about two such methods i.e input() and sys.stdin.readline(). Note: For more information, refer to Python Tutorial Input() This function first takes the input from the user and then evaluates the expression, which means Python automatically identifies whether the user entered a string or a number or list. If the input provided is not correct then either syntax error or exception is raised by Python. How the input function works in Python : When input() function executes program flow will be stopped until the user has given input. The text or message display on the output screen to ask a user to enter input value is optional i.e. the prompt, will be printed on the screen is optional. Whatever you enter as input, input function converts it into a string. if you enter an integer value still input() function converts it into a string. You need to explicitly convert it into an integer in your code using typecasting. Example: Python3 # Program to check input # type in Python num = input ("Enter number :") print(num) name1 = input("Enter name : ") print(name1) # Printing type of input value print ("type of number", type(num)) print ("type of name", type(name1)) Output: Sys.stdin.readline() Stdin stands for standard input which is a stream from which the program reads its input data. This method is slightly different from the input() method as it also reads the escape character entered by the user. More this method also provides the parameter for the size i.e. how many characters it can read at a time. Example: Python3 # Python program to demonstrate # sys.stdin.readline() import sys name = sys.stdin.readline() print(name) num = sys.stdin.readline(2) print(num) Output: Difference between Input and sys.stdin.readline() function. Input() sys.stdin.readline() The input takes input from the user but does not read escape character. The readline() also takes input from the user but also reads the escape character. It has a prompt that represents the default value before the user input. Readline has a parameter named size, Which is a non-negative number, it actually defines the bytes to be read. Comment More infoAdvertise with us Next Article Difference between input() and sys.stdin.readline() R rajkumaruttam90 Follow Improve Article Tags : Python python-input-output Practice Tags : python Similar Reads Python Tutorial - Learn Python Programming Language Python is one of the most popular programming languages. Itâs simple to use, packed with features and supported by a wide range of libraries and frameworks. Its clean syntax makes it beginner-friendly. It'sA high-level language, used in web development, data science, automation, AI and more.Known fo 10 min read Input and Output in Python Understanding input and output operations is fundamental to Python programming. With the print() function, we can display output in various formats, while the input() function enables interaction with users by gathering input during program execution. Taking input in PythonPython input() function is 8 min read Python basic I/O TechniquesTaking input in Python Developers often have a need to interact with users, either to get data or to provide some sort of result. Most programs today use a dialog box as a way of asking the user to provide some type of input. While Python provides us with two inbuilt functions to read the input from the keyboard. input () 3 min read Python input() Function Python input() function is used to take user input. By default, it returns the user input in form of a string.input() Function Syntax: input(prompt)prompt [optional]: any string value to display as input messageEx: input("What is your name? ")Returns: Return a string value as input by the user.By de 4 min read Taking input from console in Python What is Console in Python? Console (also called Shell) is basically a command line interpreter that takes input from the user i.e one command at a time and interprets it. If it is error free then it runs the command and gives required output otherwise shows the error message. A Python Console looks 2 min read Python - Print Output using print() function Python print() function prints the message to the screen or any other standard output device. In this article, we will cover about print() function in Python as well as it's various operations.Python# print() function example print("GeeksforGeeks") a = [1, 2, 'gfg'] print(a) print() Function Syntax 4 min read Python - Output Formatting In Python, output formatting refers to the way data is presented when printed or logged. Proper formatting makes information more understandable and actionable. Python provides several ways to format strings effectively, ranging from old-style formatting to the newer f-string approach.Formatting Out 5 min read Python3 I/ODifferent Input and Output Techniques in Python3 An article describing basic Input and output techniques that we use while coding in python. Input Techniques 1. Taking input using input() function -> this function by default takes string as input. Example: Python3 #For string str = input() # For integers n = int(input()) # For floating or deci 3 min read Like