Module 5: Python - Key Features of Coding

Tipping Points

Conditional Statement

• if ... else ... statement
• if ... elif ... else ... statement

• if  and  :
     
  elif   :
     
  else:
     
  
             

Iteration Statement

• The basic principle of iteration is to say

  "for each element in a list"
  
  
             

• a list for the for loop can be
  • the range() function
  • a list
  • a list formed from an external source
    External sources are
    • file
    • web page
    • JSON data
    • etc...
• while loop can be also used

Functions

• Functions are defined for zero or more parameters
• Those functions are called by sending zero or more arguments
• The parameters of a function should be matched with the arguments of a function caller.
• Write a Python program to convert Kb to Lb, vice versa.
  • Check out the web, formula
  • Define the mass conversion function, kg2lb() and lb2kg().
    • kg2lb(), which takes a number in kb and returns another number in lb.
    • lb2kg(), which takes a number in lb and returns another number in kg.
  • Call the above functions by sending numbers as follows:
    • kg2lb(67)
    • lb2kg(159)
  • Can you take numbers from user to call those functions?