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Python: Print first and last name in reverse order with a space between them

Python Basic: Exercise-5 with Solution

Write a Python program which accepts the user's first and last name and print them in reverse order with a space between them.

Python has two functions designed for accepting data directly from the user:

  • Python 2.x. -> raw_input()
  • Python 3.x. -> input()

raw_input():

raw_input() asks the user for a string of data and simply returns the string, the string data ended with a newline). It can also take an argument, which is displayed as a prompt before the user enters the data.

print raw_input('Input your name: ') 

prints out

Input your name: 

To assign the user's name to a variable "x" you can use following command :

x = raw_input('Input your name: ') 

input():

In 3.x .raw_input() is renamed to input(). input() function reads a line from sys.stdin and returns it with the trailing newline stripped.

To assign the user's name to a variable "y" you can use following command :

y = input('Input your name: ') 

Pictorial Presentation:

Print first and last name in reverse order with a space between them

Sample Solution:-

Python Code:

fname = input("Input your First Name : ")
lname = input("Input your Last Name : ")
print ("Hello  " + lname + " " + fname)

Sample Output:

Input your First Name : Dany                                       
Input your Last Name : Boon                                        
Hello  Boon Dany              

Flowchart:

Flowchart: Print first and last name in reverse order with a space between them.

Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Python Code Editor:

 

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Previous: Write a Python program which accepts the radius of a circle from the user and compute the area.
Next: Write a Python program which accepts a sequence of comma-separated numbers from user and generate a list and a tuple with those numbers.

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Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

  • The os and os.path modules.
  • The __file__ constant
  • os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
  • os.path.dirname(path) (returns "the directory name of pathname path")
  • os.getcwd() (returns "a string representing the current working directory")
  • os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m