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Well done, by now you have learned to build a calculator!
At a Glance
A computer program is a set of instructions which is given to a computer to execute.
A programming language is a tool which is used to write instructions for computers to follow.
Computers can only understand binary strings of 1s and 0s.
Sorting is arranging numbers/ elements either in ascending order or in descending order.
Variables are used to store values.
Whenever a variable is created, Python assigns a space to it so that its value can be stored
till the program runs.
String, integer/floats and Boolean are the three basic data types in Python.
Exercise
A. Tick ( ) the correct option.
1. Which of the following data type access character in a string by using its position?
a. Integer b. Float
c. String d. Boolean
2. Which of the following operator is used to join the strings together?
a. + b. ++
c. +++ d. +=
82 Touchcode-VII

