UserInput.md

User Input

For Reading User Input

• For reading user input from terminal or shell we used keyword input() function.

• In python version 2 we need to get

1. number using input() and
2. strings using raw_input()

• In python version 3 input() function handle string as well as number.

Syntax:

msg=input("message")
print(msg)

You can put message as a blank that is an option to show message when accepting user input

Example:

name=input("Enter your name:")
print(name)
#this will accept user input and save it within 
#name variable and print name.

You can also ask user message In a print statement and later ask user input function using input()

#this will ask user on terminal on same line
username=input('Enter user name:')  

print('Enter Username:')
uname=input()   #this will ask input on new line

print(username)
print(uname)

Note: python 3 consider number and string as data type string while reading from user input

Python 2

nm1=input()
#when user input 5 as nm1
print(type(nm1))
# this will print *int* as data type

Output

5
<class 'int'>

Python 3

nm1=input()
#when user input 5 as nm1
print(type(nm1))
#this will print *Str* as data type

Output

5
<class 'str'>

Examples

Read string

mystring=input("Enter string")
print(mystring)

For Printing Output on Console

• The print() function prints the given object to the standard output device (screen) or to the text stream file.

Syntax:

print(*objects, sep=' ', end='\n', file=sys.stdout, flush=False)

objects: object to the printed. * indicates that there may be more than one object

sep: objects are separated by sep. Default value: ' '

end: the end is printed at last

file: must be an object with a write(string) method. If omitted it, sys.stdout will be used which prints objects on the screen.

flush: If True, the stream is forcibly flushed. Default value: False.

Example: Normal single object print

#intilize The Variable
mystring="i am python"
number=5

#print mystring and number
print(mystring)
print(number)

Output

i am python
5

Pass Multiple Objects to print()

#Assign Variable and numbers
mystring="i am python"
number=5

#print mystring and number
print(mystring,number)

Output

i am python 5