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link管理  ›  Taking multiple inputs from user in Python - GeeksforGeeks
https://www.geeksforgeeks.org/taking-multiple-inputs-from-user-in-python/
害羞的大象
4 月前

The developer often wants a user to enter multiple values or inputs in one line. In C++/C user can take multiple inputs in one line using scanf but in Python user can take multiple values or inputs in one line by two methods.

Methods to Take multiple inputs from user

Using split() method :

This function helps in getting multiple inputs from users. It breaks the given input by the specified separator. If a separator is not provided then any white space is a separator. Generally, users use a split () method to split a Python string but one can use it in taking multiple inputs.

Syntax : 

input().split(separator, maxsplit)

Implementations:

Python3 
# Python program showing how to
# multiple input using split
# taking two inputs at a time
x, y = input("Enter two values: ").split()
print("Number of boys: ", x)
print("Number of girls: ", y)
# taking three inputs at a time
x, y, z = input("Enter three values: ").split()
print("Total number of students: ", x)
print("Number of boys is : ", y)
print("Number of girls is : ", z)
# taking two inputs at a time
a, b = input("Enter two values: ").split()
print("First number is {} and second number is {}".format(a, b))
# taking multiple inputs at a time 
# and type casting using list() function
x = list(map(int, input("Enter multiple values: ").split()))
print("List of students: ", x)

Output: 


Enter two values: 5 10
Number of boys:  5  
Number of girls:  10
Enter three values: 5 10 15
Total number of students:  5
Number of boys is :  10     
Number of girls is :  15    
Enter two values: 5 10
First number is 5 and second number is 10
Enter multiple values: 5 10 15 20 25
List of students:  [5, 10, 15, 20, 25]
Using map() with split():
Using map() with the split() method in Python is a powerful way to efficiently process input values. The split() method allows breaking a string into substrings based on a specified delimiter, often useful for parsing user input. By combining it with map() and a desired transformation function (like int() for converting to integers), we can swiftly convert these substrings into the desired data types and assign them to variables for further processing or calculations.


Syntax:
variable1, variable2, ... = map(datatype, input().split())
Implementations:

            Python3
    
#Example with integers
a, b, c = map(int, input("Enter three integers separated by spaces: ").split())
print("Sum:", a + b + c)
#Example with floats:
x, y = map(float, input("Enter two floats separated by a space: ").split())
print("Product:", x * y)
#Example with strings:
name, age = input("Enter your name and age separated by a space: ").split()
print("Hello,", name + "! You are", age, "years old.")

Output:


Enter three integers separated by spaces: 5 10 15
Sum: 30
Enter two floats separated by a space: 3.5 2.5
Product: 8.75
Enter your name and age separated by a space: Alice 25
Hello, Alice! You are 25 years old.
Using List comprehension : 
List comprehension is an elegant way to define and create a list in Python. We can create lists just like mathematical statements in one line only. It is also used in getting multiple inputs from a user. 


Example: 

            Python3
    
# Python program showing
# how to take multiple input
# using List comprehension
# taking two input at a time
x, y = [int(x) for x in input("Enter two values: ").split()]
print("First Number is: ", x)
print("Second Number is: ", y)
# taking three input at a time
x, y, z = [int(x) for x in input("Enter three values: ").split()]
print("First Number is: ", x)
print("Second Number is: ", y)
print("Third Number is: ", z)
# taking two inputs at a time
x, y = [int(x) for x in input("Enter two values: ").split()]
print("First number is {} and second number is {}".format(x, y))
# taking multiple inputs at a time 
x = [int(x) for x in input("Enter multiple values: ").split()]
print("Number of list is: ", x) 

Output :


Enter two values: 5 10
First Number is:  5
Second Number is:  10
Enter three values: 5 10 15
First Number is:  5
Second Number is:  10
Third Number is:  15
Enter two values: 5 10
First number is 5 and second number is 10
Enter multiple values: 5 10 15 20 25
Number of list is:  [5, 10, 15, 20, 25]

Note: The above examples take input separated by spaces. In case we wish to take input separated by comma (, ), we can use the following: 

            Python3
    
# taking multiple inputs at a time separated by comma
x = [int(x) for x in input("Enter multiple value: ").split(",")]
print("Number of list is: ", x) 

Output


Please see https://ide.geeksforgeeks.org/BHf0Cxr4mx for a sample run.
 

                
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