Python basic series tutorial code files.

Author: programmingwithmohammed

and_or_not_examples.py

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+# -*- coding: utf-8 -*-
+"""
+Created on Fri Jul 30 00:43:05 2021
+
+@author: mjach
+"""
+
+'''AND, OR, NOT examples'''
+
+# and examples
+#if both are true then and expression will be true 
+
+answer_one = True
+answer_two = True
+#print('True or False :', answer_one and answer_two)
+
+#if one the variable is false answer will be false
+answer_one = False
+answer_two = True
+#print('\nTrue or False :', answer_one and answer_two)
+
+#or operator example
+#if one of the varaible is True answer will be true
+answer_one = True
+answer_two = True
+#print('\nTrue or False :', answer_one or answer_two)
+
+answer_one = False
+answer_two = True
+#print('\nTrue or False :', answer_one or answer_two)
+
+#if both false the result will be false
+answer_one = False
+answer_two = False
+#print('\nTrue or False :', answer_one or answer_two)
+
+#not operator examples
+# not represent reverse in boolen
+# if its true will return false, and if it is false will return false
+answer_one = True
+print('\nTrue or False :', not answer_one)
+
+answer_one = False
+print('\nTrue or False :', not answer_one)

break_examples.py

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+# -*- coding: utf-8 -*-
+"""
+Created on Sat Jul 31 20:19:51 2021
+
+@author: mjach
+"""
+
+'''how to use break examples'''
+
+fruit_list = ['apple', 'banana', 'orange', 'watermelon']
+
+# for fruit in fruit_list:
+#     print(f'The fruit name is :{fruit}')
+#     if fruit == 'orange':
+#         break
+
+'''How to do break in while loop'''   
+# fruit = 'orange'
+# while True:
+#     if fruit in fruit_list:
+#         print(f'The fruit is found: {fruit}')
+#         break
+    
+'''How to do break in while loop'''   
+counter = 0
+while True:
+    counter = counter + 1
+    if counter == 20:
+        print(f'Count has been done to : {counter}')
+        break

comparisons_examples.py

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+# -*- coding: utf-8 -*-
+"""
+Created on Thu Jul 29 03:31:58 2021
+
+@author: mjach
+"""
+
+'''Comparisions example with numbers '''
+
+# > greater than sign
+# >= greater than equal to sign
+# < less than sign
+# <= less than equal to sign
+
+# print('100 < 200 =', 100 < 200)
+# print('100 <= 100 =', 100 <= 100)
+# print('100 < 50 =', 100 < 50)
+# print('100 <= 90 =', 100 <= 90)
+
+# print('\n') # to get a new line
+
+# print('200 > 100 =', 200 > 100)
+# print('200 >= 200 =', 200 >= 200)
+# print('200 > 500 =', 200 > 500)
+# print('200 >= 500 =', 200 >= 500)
+
+# print('-20 is greater than 20 ?:', -20 > 20)
+
+'''
+Equality
+Comparisions example with equals(==) and not equals(!=)
+will return boolen result either True or False
+'''
+
+answer_one = 1
+answer_two = 1
+
+#print('True or False:',answer_one == answer_two)
+
+answer_one = 5
+answer_two = 1
+#print('True or False:',answer_one != answer_two)
+
+answer_one = 'apple'
+answer_two = 'apple'
+
+# print('True or False:',answer_one == answer_two)
+# print('True or False:',answer_one != answer_two)
+
+'''Identity check
+is or is not key words. (is) is similiar to == and (is not) is similiar to !=
+'''
+fruit_list_one = ['apple', 'banana'] 
+fruit_list_two = ['apple', 'banana']
+
+#checking for equality
+
+#print(fruit_list_one == fruit_list_two) # will give true or false result
+
+#checking for identity
+# both list has different memory address so when checking for identy 
+# it will give false result because both list has different memory address.
+
+#print(fruit_list_one is fruit_list_two) # will give true or false result
+
+'''
+is and is not checking for built in types like None, True and False
+'''
+
+one = True
+
+print('One is True :',one is True)
+
+two = False
+print('Two is fasle:',two is False)
+print('Two is not true:', two is not False )

continue_examples.py

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+# -*- coding: utf-8 -*-
+"""
+Created on Sat Jul 31 20:31:51 2021
+
+@author: mjach
+"""
+
+'''Continue examples'''
+
+fruit_list = ['apple', 'banana', 'orange', 'watermelon']
+
+# for fruit in fruit_list:
+#     if fruit == 'orange':
+#         continue
+#     print(f'The fruit name is :{fruit}')
+
+    
+'''continue and break togather examples'''
+# for fruit in fruit_list:
+#     if len(fruit) !=6:
+#         continue
+#     print(f'The fruit name is : {fruit}')
+    
+#     # if fruit == 'orange':
+#     #     break
+
+'''How to use return statement inside the loop'''
+
+def find_fruit(fruit_name):
+    for fruit in fruit_list:
+        print(fruit)
+        if fruit == 'orange':
+            return f'we found out the fruit :{fruit}'
+
+#calling the function
+print(find_fruit(fruit_list))
+    

dict_examples.py

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+# -*- coding: utf-8 -*-
+"""
+Created on Thu Jul 29 00:52:42 2021
+
+@author: mjach
+"""
+
+'''how to create dict.'''
+my_dict = {} # empty dict
+another_way_dict = dict() # empty dict
+
+# print('What type is it?', type(my_dict))
+# print('\nWhat type is it?', type(another_way_dict))
+
+'''how to create dict with items'''
+
+my_dict_with_items = {1: 'apple', 2: 'banana', 3: 'orange'}
+
+'''how to find out length of the dict'''
+
+#print('\nlength of the dict:', len(my_dict_with_items))
+
+'''how to find out key is exits or not'''
+
+# print('\nTo find out key exits or not:', 5 in my_dict_with_items)
+# print('\nTo find out key exits or not:', 1 in my_dict_with_items)
+
+'''how to find out value by the key'''
+
+# print('\nTo find out the value:', my_dict_with_items[2])
+# #print('\nTo find out the value:', my_dict_with_items[4]) # will throw key error
+# print('\nTo find out the value:', my_dict_with_items.get(4)) # will not throw error but rather it will give none
+
+'''how to get all the keys and values'''
+print('\nTo get all the keys and values from dict.:', my_dict_with_items.items())
+
+'''how to get only keys from the dict'''
+
+print('\nTo get all the keys only from dict.:', my_dict_with_items.keys())
+
+'''how to get only values from the dict'''
+
+print('\nTo get all the keys only from dict.:', my_dict_with_items.values())
+
+'''how to add new items in the dict'''
+
+my_dict_with_items[6] = 'watermelon' # key value pairs
+print('\nTo add new items in the dict',my_dict_with_items.items())
+
+'''how to add or update two dict togather'''
+
+new_dict = {7: 'cucumber', 8: 'carrot'}
+
+my_dict_with_items.update(new_dict)
+print('\nUpdated dict now :', my_dict_with_items)

first_program.py

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+# -*- coding: utf-8 -*-
+"""
+Created on Thu Jul 15 01:36:38 2021
+
+@author: mjach
+"""
+
+print('Hi there')#this is a comment
+
+ 
+# =============================================================================
+# print('Hi there')
+# print('Hi there')
+# print('Hi there')
+# print('Hi there')
+# =============================================================================
+
+'''
+print('Hi there')
+print('Hi there')
+print('Hi there')
+print('Hi there')
+'''

for_loop_examples.py

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+# -*- coding: utf-8 -*-
+"""
+Created on Fri Jul 30 01:40:11 2021
+
+@author: mjach
+"""
+
+'''For look examples'''
+
+my_fruits_list = ['apple', 'orange', 'banana', 'watermelon']
+
+#checking is the fruit in my list
+print('Is this fruit in my list?:', 'apple' in my_fruits_list)
+
+'''for loop example'''
+# for fruit in my_fruits_list:
+#     print(f'Fruit name is :{fruit}')
+    
+'''how to use range() function in for loop - 
+here range 0 is inclusive I mean 0 will print it will start from 0
+and 4 is exclusive I mean 4 will not print, it will stop to number 3
+'''
+
+# for number in range(11):
+#     print(f'Number is : {number}')
+    
+'''How to print specific number within range
+we can specify start and end.
+here number 1 is inclusiveand
+number 10 is exclusive
+'''
+# for number in range(1, 10):
+#     print(f'Here number will print from 1 to 9: {number}')
+    
+'''range() function another use
+specify start, end, increment
+'''
+
+# for number in range(2, 20, 2):
+#     print(f'Number is :{number}')
+    
+'''How to print out the index of the items
+we can use buit in function enumerate
+'''
+
+# for index, fruit in enumerate(my_fruits_list):
+#     print(f'Fruit :{fruit} is at index no : {index}')
+    
+'''how to use for loop in dictionary'''
+
+my_fruit_dict= {1:'apple', 2:'orange', 3:'banana', 4:'watermelon'}
+
+# for fruit in my_fruit_dict:
+#     print(f'That will return only keys of the dict.: {fruit}')
+    
+for keys, values in my_fruit_dict.items():
+    print(f'Fruit :{values} is at {keys} ')

functions_python.py

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+# -*- coding: utf-8 -*-
+"""
+Created on Mon Jul 19 01:38:51 2021
+
+@author: mjach
+"""
+#simple function example
+def my_function():
+    print('Hi it is a function.')
+    
+#function example with arguments        
+def function_with_arguments(greeting, name):
+    print('Hi, %s, I wish you all the best %s'%(greeting, name))
+    
+# return function example   
+def adding_two_numbers(a, b):
+    return a + b
+    
+# calling the functions
+
+my_function() # calling first function
+
+function_with_arguments('Good morning', 'Mohammed')# calling function with the arguments
+
+result_two_numbers = adding_two_numbers(5, 4)# calling function that return 
+
+print(result_two_numbers) # print the result of the function