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Author: ROBOMASTER-S1

Abstract Python.py

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+# Let's create a dictionary that uses strings as keys and values, instead of
+# of actual text, like we did before. Let's create two, simple tuples; one for
+# the key tuple and one for the value tuple. We can also create them with or
+# without parentheses, but a '\' backslash must be implemented in place of the
+# parentheses. However, the Python programming standard shows only the
+# constant use of parentheses, not backslashes, as you can see in the next
+# example below.
+
+key='dog','cat','mouse','bird','fish' # tuple by default
+
+value=(
+    'Grey Wolf','Huge Tigger',
+    'Black Rat','Macaw Parrot',
+    'Great White Shark') # create a tuple with '()' parentheses.
+
+# Why use '()' parentheses when you can simply use the '\' backslash instead.
+# Note: '\' is not the usual Python programming standard, but it works. Now,
+# however, this only acts like a tuple by default, not a list as one would think.
+# You cannot change or modify tuple values at all; they are immutable, not
+# mutable like lists. Even though this works, it's not viable, especially when
+# you need to create a mutable list, not an immutable tuple, as this example
+# does by default. You must use either '()' parentheses for tuples, '[]' square
+# brackets for lists and '{}' curly braces for dictionaries and sets alike.
+
+key='dog','cat','mouse','bird','fish' # tuple by default
+
+value=\
+        'Grey Wolf','Huge Tigger',\
+        'Black Rat','Macaw Parrot',\
+        'Great White Shark' # tuple by default
+
+dictionary={ # dictionary
+    key[0]:value[0],
+    key[1]:value[1],
+    key[2]:value[2],
+    key[3]:value[3],
+    key[4]:value[4]
+    }
+
+# Non formatted examples with commas ',' and plus '+' signs
+
+for keys,values in dictionary.items():
+    print('My '+keys+' is really a '+values+'.')
+
+for keys,values in dictionary.items():
+    print('My',keys,'is really a',values+'.')
+
+# Old formatted example: now depreciated in Python 3 and up.
+# Can still be used in Python 3, thus far.
+
+for keys,values in dictionary.items():
+    print('My {} is really a {}.'.format(keys,values))
+
+# New formatted example: Python 3 and up.
+
+for keys,values in dictionary.items():
+    print(f'My {keys} is really a {values}.')
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+# Things you can do with tuples and lists.
+
+# Tuple Example:
+
+variable_1='dog','cat','bird','guppy'
+
+variable_2=(
+    'Grey Wolf','Huge Tigger',
+    'Macaw Parrot','Great White Shark')
+
+variable_3='John','Rob','Ron','Bob'
+
+variable_4='Mom','Dad','Brother','Sister'
+
+variable_5='friend','girlfriend','boyfriend','neighbour'
+
+for var1,var2,var3,var4,var5 in zip(variable_1,variable_2,variable_3,variable_4,variable_5):
+    print(f'My {var4} and my {var5} {var3} says my {var1} is really a {var2}.')
+
+# List Example:
+
+variable_1=['dog','cat','bird','guppy']
+
+variable_2=[
+    'Grey Wolf','Huge Tigger',
+    'Macaw Parrot','Great White Shark']
+
+variable_3=['John','Rob','Ron','Bob']
+
+variable_4=['Mom','Dad','Brother','Sister']
+
+variable_5=['friend','girlfriend','boyfriend','neighbour']
+
+for var1,var2,var3,var4,var5 in zip(variable_1,variable_2,variable_3,variable_4,variable_5):
+    print(f'My {var4} and my {var5} {var3} says my {var1} is really a {var2}.')
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+# Test whether a value is true or false using the logical operators:
+
+# " ==, <, >, <=, >=, != "
+
+a=1;b=1
+
+print(a==a) # True
+print(a<a) # False
+print(a>a) # False
+print(a<=a) # True
+print(a>=a) # True
+print(a!=a) # False
+
+print(b==b) # True
+print(b<b) # False
+print(b>b) # False
+print(b<=b) # True
+print(b>=b) # True
+print(b!=b) # False
+
+print(a==b) # True
+print(a<b) # False
+print(a>b) # False
+print(a<=b) # True
+print(a>=b) # True
+print(a!=b) # False
+
+print(b==a) # True
+print(b<a) # False
+print(b>a) # False
+print(b<=a) # True
+print(b>=a) # True
+print(b!=a) # False
+
+# Test whether a value is true or false using the Boolean conditionals:
+
+# " True, False, and, or, not "
+
+a=True;b=False
+
+print(a and a) # True
+print(b and b) # False
+print(a and b) # False
+print(b and a) # False
+
+print(a and not a) # False
+print(b and not b) # False
+print(a and not b) # True
+print(b and not a) # False
+
+print(a or a) # True
+print(b or b) # False
+print(a or b) # True
+print(b or a) # True
+
+print(a or not a) # True
+print(b or not b) # True
+print(a or not b) # True
+print(b or not a) # False
+
+print(a is a) # True
+print(b is b) # True
+print(a is b) # False
+print(b is a) # False
+
+print(a is not a) # False
+print(b is not b) # False
+print(a is not b) # True
+print(b is not a) # True
+
+# Check to see if a variable contains a value.
+
+numbers=1,2,3,4,5,6,7,8,9,10
+
+print(1 in numbers) # True
+print(9 in numbers) # True
+print(11 in numbers) # False
+print(11 not in numbers) # True