Python-Assignments

Reference

print

You will use this command to display messages to the user. print("Hello World")

name = "Yasas"
print("Hello "+ name)

input

This command is used to take in user inputs. input("Please enter your name")

name = input("Please enter your name")

Data types

Python has many different data types some of the main ones are:

String(str) Integer(int) Float(float) Boolean(bool)

To convert between data types, use the following:

num=int(numberString)

Logic

Logical operators and conditional statements are used by the computer to make decisions.

   if (name=="Yasas"):
        ....
    elif(name="Tem"):
        ....
    else:
        ....

The operators and, or can also be used.

Random

To generate random number, we must import a module called random.

import random
rand_I=random.randint(min,max)

Lists

Lists are used to store multiple pieces of information of the same type in a single variable with with different indices.

The following is an example using a list:

fruits = ["Apple","Orange", "Pear"]
print(fruits[0])
print(fruits[2])
fruits.append("Banana")

Loops

for loops and while loops are used to repeat a section of code multiple times.

For Loop:

for fruit in fruits:
    print(fruits)

While Loop:

condition=True 
while (conditon):
    if input("Type 'q' to exit ")=="q":
        condition=False 

Range

Useful in for loops when you need it to iterate with numerical values. range(upper_Limit,lower_Limit).

for num in range(1,5):
    print("Player " + str(num))
>>Player 1
>>Player 2
>>Player 3
>>Player 4
>>Player 5

Function

Functions are a set of instructions that can be used multiple times through out a program. They are given values and can return values.

def cube(inputValues):
    ans=iinputValues*inputValues*inputValues
    return ans
number = int(input("Enter a number to cube "))
anwser = cube(number)
print(anwser)