Different Input and Output Techniques in Python3
Last Updated :
10 Nov, 2022
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
str = input()
n = int(input())
n = float(input())
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2. Taking Multiple Inputs: Multiple inputs in Python can be taken with the help of the map() and split() methods. The split() method splits the space-separated inputs and returns an iterable whereas when this function is used with the map() function it can convert the inputs to float and int accordingly.
Example:
Python3
x, y = input().split()
m, n = map(int, input().split())
m, n = map(float, input().split())
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3. Taking input as a list or tuple: For this, the split() and map() functions can be used. As these functions return an iterable we can convert the given iterable to the list, tuple, or set accordingly.
Example:
Python3
n = list(map(int, input().split()))
print(n)
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Output:
[4, 5, 6, 1, 56, 21]
4. Taking Fixed and variable numbers of input:
Python3
str, *lst = input().split()
lst = list(map(int, lst))
print(str, lst)
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Output:
geeksforgeeks [2, 0, 2, 0]
Output Techniques
1. Output on a different line: print() method is used in python for printing to the console.
Example:
Python3
lst = ['geeks', 'for', 'geeks']
for i in lst:
print(i)
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Output:
geeks
for
geeks
2. Output on the same line: end parameter in Python can be used to print on the same line.
Example 1:
Python3
lst = ['geeks', 'for', 'geeks']
for i in lst:
print(i, end='')
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Output:
geeksforgeeks
Example 2: Printing with space.
Python3
lst = ['geeks', 'for', 'geeks']
for i in lst:
print(i,end=' ')
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Output:
geeks for geeks
3. Output Formatting: If you want to format your output then you can do it with {} and format() function. {} is a placeholder for a variable that is provided in the format() like we have %d in C programming.
Example:
Python3
print('I love {}'.format('geeksforgeeks.'))
print("I love {0} {1}".format('Python', 'programming.')
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Output:
I love geeksforgeeks.
I love Python programming.
Note: For Formatting the integers or floating numbers the original method can be used in the {}. like ‘{%5.2f}’ or with the numbers, we can write it as ‘{0:5.2f}’. We can also use the string module ‘%’ operator to format our output.
4. Output using f strings:
Python3
val = "Hello"
print(f"{val} World!!!")
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