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Author: ROBOMASTER-S1

Return Functions.py

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+# Here are some simple return function examples to
+# practice with.
+
+def addition(num1,num2):
+    return num1+num2
+def subtraction(num1,num2):
+    return num1-num2
+def multiplication(num1,num2):
+    return num1*num2
+def square(num1,num2):
+    return num1**num2
+def division(num1,num2):
+    return num1/num2
+def name(first_name,last_name,mc2=18600**2):
+    return first_name+last_name+str(mc2)
+
+a=addition(8,2)
+s=subtraction(8,2)
+m=multiplication(8,2)
+d=division(8,2)
+e=square(8,2)
+
+nums=int(a+s+m+d+e)
+
+name=name('Albert ','Einstein = ',nums)
+
+# remove the 'nums' variable and see what happens when
+# you re-execute/run the above Python program example.
+
+print(name)
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+# How Parentheses, Square Brackets and Curly Braces
+# work in Python.
+
+# Parentheses: '()'
+# Parentheses are used for 'Tuples', along with other uses,
+# such as 'print' functions and functions alike.
+
+# Square Brackets: '[]'
+# Square Brackets are used for 'lists' and '2d lists', along
+# with other uses, such as indexing character strings and
+# values alike.
+
+# Curly Braces: '{}'
+# Curly Braces are used for 'sets' and 'dictionaries', along
+# with other uses, such as formatted character strings.
+
+# Here is a simple 'tuple' example:
+# names=('John','Ron','Tom','Bob')
+
+# Here is a simple 'list' example:
+# names=['John','Ron','Tom','Bob']
+
+# Here is a simple 'dictionary' example:
+# names={1:'John',2:'Ron',3:'Tom',4:'Bob'}
+
+# Here is a simple 'set' example:
+# names={'John','Ron','Tom','Bob'}
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+# Variable Scope:
+
+# L= Local
+# E= Enclosing
+# G= Global
+# B=Built-in
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+# predefined returned values to arguments example:
+
+def values_example(value0,value1,value2,value3):
+    return 0,1,2,3
+
+print(values_example('Value0','Value1','Value2','Value3')[2])
+
+# undefined returned values to arguments example:
+
+# If you aren't sure how many returned values to variables
+# are needed, use the '*args' function instead. You can name
+# the word 'args' to any name you like, but the (*) is needed.
+# For example: '*get_any_number_of_returned_values' works.
+# However in python, programmers use the standard as '*args'
+# short for (arguments). Use '*args' if you want to update the
+# function's returned values, without the worry of how many
+# actual argument variables are needed inside the 'print'
+# statement, such as the example above illustrates.
+
+# Example 1:
+
+def args_example(*args):
+    return args[0]
+
+print(args_example(0,1,2,3,4,5,6,7,8,9))
+
+# Example 2:
+
+def args_example(*args):
+    return 0,1,2,3,4,5,6,7,8,9
+
+print(args_example()[1])
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+# undefined returned values to keyword arguments example:
+
+# If you aren't sure how many returned values to variables are
+# needed, use the '**kwargs' function instead. You can name the
+# word 'kwargs' to any name you like, but the (**) is needed. For
+# example: '**get_any_number_of_returned_values' works. However
+# in python, programmers use the standard as '**kwargs' short for
+# (keyword arguments). Use '**kwargs' if you want to update the
+# function's returned values, without the worry of how many actual
+# keyword argument variables are needed inside the 'return'
+# statement.
+
+def kwargs_example(**kwargs):
+    return 0,1,2,3,4,5,6,7,8,9
+
+print(kwargs_example()[2])
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+# Here are the very same examples below, but with hard line
+# breaks. In most cases, you must use parenthesis '()' to surround
+# hard line breaks, such as these examples illustrate.
+
+# Example 1:
+
+def args_example(*args):
+    return args[0]
+
+print(args_example( # insert a hard line break if you like.
+  'Test with numbers',0,1,2,3,4,5,6,7,8,9,'Example.'))
+
+# Example 2:
+
+def args_example(*args):
+    return( # insert a hard line break if you like.
+    'Test with numbers',0,1,2,3,4,5,6,7,8,9,'Example.')
+
+print(args_example()[0])
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+def kwargs_example(**kwargs):
+  return( # insert a hard line break if you like.
+    'Test with numbers',0,1,2,3,4,5,6,7,8,9,'Example.')
+
+print(kwargs_example()[0])
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+# Here are the very same examples again, but with the use of
+# variables to shorten our code a bit in the 'print' statements.
+
+def args_example(*args):
+  return args
+
+args=args_example( # insert a hard line break if you like.
+  'Test with numbers',0,1,2,3,4,5,6,7,8,9,'Example.')
+
+print(args[0])
+
+# Example 2:
+
+def args_example(*args):
+  return( # insert a hard line break if you like.
+    'Test with numbers',0,1,2,3,4,5,6,7,8,9,'Example.')
+
+args=args_example()
+
+print(args[0])
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+def kwargs_example(**kwargs):
+  return( # insert a hard line break if you like.
+    'Test with numbers',0,1,2,3,4,5,6,7,8,9,'Example.')
+
+kwargs=kwargs_example()
+
+print(kwargs[0])
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+# Using the knowledge we've learnt so far, let's create an
+# arguments variable list loop using a for-loop.
+
+def args_example(*args):
+  return args
+
+args=args_example( # insert a hard line break if you like.
+  'Test with numbers',0,1,2,3,4,5,6,7,8,9,'Example.')
+
+for i in args:
+  print(i,end=' ') # add the 'end=' function to create single-line text output.
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+# Using the knowledge we've learnt so far, let's create a
+# keyword arguments variable list loop using a for-loop.
+
+def kwargs_example(**kwargs):
+  return( # insert a hard line break if you like.
+    'Test with numbers',0,1,2,3,4,5,6,7,8,9,'Example.')
+
+kwargs=kwargs_example()
+
+for i in kwargs:
+  print(i,end=' ') # add the 'end=' function to create single-line text output.