Taking input is a way of have interaction with users, or get records to grant some result. Python affords two built-in methods to study the information from the keyboard. These strategies are given below.
input(prompt)
raw_input(prompt)
input()
The input characteristic is used in all modern day model of the Python. It takes the input from the user and then evaluates the expression. The Python interpreter robotically identifies the whether a user enter a string, a number, or a list. Let’s recognize the following example.
Example –
# Python program showing
# a use of input()
name = input("Enter your name: ")
print(name)
Output:
Enter your name: Devansh
DevanshThe Python interpreter will not execute further traces until the person enters the input.
Let’s understand another example.
Example – 2
# Python program showing
# a use of input()
name = input("Enter your name: ") # String Input
age = int(input("Enter your age: ")) # Integer Input
marks = float(input("Enter your marks: ")) # Float Input
print("The name is:", name)
print("The age is:", age)
print("The marks is:", marks)
Output:
Enter your name: Johnson
Enter your age: 21
Enter your marks: 89
The name is: Johnson
The age is 21
The marks is: 89.0Explanation:
By default, the input() feature takes input as a string so if we need to enter the integer or float type input then the input() characteristic ought to be type casted.
age = int(input("Enter your age: ")) # Integer Input
marks = float(input("Enter your marks: ")) # Float Input
We can see in the above code the place we type casted the user enter into int and float.
How input() function works?
The flow of the program has stopped until the user enters the input.
The text statement which also knows as prompt is optional to write in input() function. This prompt will display the message on the console.
The input() function automatically converts the user input into string. We need to explicitly convert the input using the type casting.
raw_input() – The raw_input function is used in Python’s older version like Python 2.x. It takes the input from the keyboard and return as a string. The Python 2.x doesn’t use much in the industry. Let’s understand the following example.
Example –
# Python program showing
# a use of raw_input()
name = raw_input("Enter your name : ")
print name
Output:
Enter your name: Peter
PeterHow to check Python version?
To test the Python version, open command line (Windows), shell (Mac), or terminal (Linux/Ubuntu) and run python -version. It will show the corresponding Python version.
Check Python version in the running script
We can test the Python version in our walking script. Consider the following approaches to understand Python version in all working systems.
| Commands | Operating System/Environment | Output |
|---|---|---|
| Python –version or Python -v or Python -vv |
Window/Mac/Linux | Python 3.8.1 |
| import sys sys.version sys.version_info |
Python Script | 3.8.3 (default, May 13 2020, 15:29:51) [MSC v.1915 64 bit (AMD64)] |
| Import platform platform.python_version() |
Python Script | ‘3.8.1’ |
Let’s have a look at following image.
