Python for Beginners

Author: imtahiriqbal

beginners/dictionary_key_value.py

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+""" This file is create and managed by Tahir Iqbal
+    ----------------------------------------------
+       It can be use only for education purpose
+"""
+
+dict = {'a': 1, 'b': 2, 'c': 3, 'd': 4}
+print("Keys and its Values")
+for key, value in dict.items():
+# .items() prints both keys and values
+    print(key, value, sep='->')
+
+
+# print only keys nor values
+print("\nKeys of Dictionary")
+for key in dict:
+    print(key)
+
+# print only values
+print("\nValues of Dictionary")
+for value in dict.values():
+    print(value)

beginners/list_sorting.py

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+""" This file is create and managed by Tahir Iqbal
+    ----------------------------------------------
+       It can be use only for education purpose
+"""
+
+# Sorting List
+developer = ['Web', 'Software', 'Data Science', 'Application']
+print(developer)
+developer.sort() # sort ascending, now list change into ascending
+print(developer)
+developer.sort(reverse=True) # sort descending, now list change into descending
+print(developer)
+
+developer = ['Web', 'Application']
+print(sorted(developer)) # doesn't affect or change original list
+print(developer)

beginners/removing_white_spaces.py

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+""" This file is create and managed by Tahir Iqbal
+    ----------------------------------------------
+       It can be use only for education purpose
+"""
+
+# Whitespace
+name = "     Tahir Iqbal     "
+print('_' + name + '_')
+
+# removes left side spaces
+print('_' + name.lstrip() + '_')
+
+# removes right side spaces
+print('_' + name.rstrip() + '_')
+
+# removes all spaces from left and right both sides
+print('_' + name.strip() + '_')
+
+# also use lstrip and rstrip at same time instead of strip
+print("\nlstrip() and rstrip() at same time")
+print('_' + name.lstrip().rstrip() + '_')

beginners/sets_and_operators.py

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+""" This file is create and managed by Tahir Iqbal
+    ----------------------------------------------
+       It can be use only for education purpose
+"""
+
+# Set & Set Operations
+num_set = {2, 3, 4, 6} # set() is known empty set
+print(num_set)
+
+# Adding items in set
+num_set.add(1) 
+num_set.add(5)
+
+# Remove item from set
+num_set.remove(6)
+print(num_set)
+print('\n\n')
+
+# Set Operations
+set_a = {1, 2, 3, 4, 5}
+set_b = {4, 5, 6, 7, 8}
+print('Set A : ', set_a)
+print('Set B : ', set_b)
+
+print('Set A | Set B : ', set_a | set_b) # union set, print all value set a and b which value is two times they print once
+print('Set A & Set B : ', set_a & set_b) # intersection set, print value which is in both of set a and b
+print('Set A - Set B : ', set_a - set_b) # difference set, remove set b value from a then prints remaining values of a
+print('Set A ^ Set B : ', set_a ^ set_b) # symmetric difference, print set a and b items which does'nt matches
+

beginners/single_double_quotes.py

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+""" This file is create and managed by Tahir Iqbal
+    ----------------------------------------------
+       It can be use only for education purpose
+"""
+
+# Printing Single and Double Quote
+
+# single quote should print in double quotes
+single = "Python's"
+print(single)
+
+# double quote should print in single quotes
+double = 'Python"s'
+print(double)
+
+# single quote prints in single quotes use \ sign
+singles = 'Python\'s'
+print(singles)
+
+# double quote prints in double quotes use \ sign
+doubles = "Python\"s"
+print(doubles)