Initial Commit

Author: joemarini

Finished/Ch2/bestpractice_finished.py

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+# LinkedIn Learning Python course by Joe Marini
+# Example file for Python programming best practices
+
+
+# 1. Understand the importance of whitespace
+
+
+# 2. Use descriptive variable and function names
+
+
+# 3. Write good comments
+
+
+# 4. Format code to be readable
+
+

Finished/Ch2/complex_finished.py

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+# LinkedIn Learning Python course by Joe Marini
+# Example file for complex types
+
+# Sequences: Lists and Tuples
+# These are -- surprise -- sequences of values
+mylist = [0, 1, "two", 3.2, False]
+print(len(mylist))
+
+# to access a member of a sequence type, use []
+print(mylist[2])
+print(mylist[-1])
+mylist[0] = 1
+print(mylist[0])
+
+# add a list to another list
+anotherlist = [5, 6.0, "seven"]
+mylist = mylist + anotherlist
+print(anotherlist)
+
+# use slices to get parts of a sequence
+print(mylist[1:4])
+print(mylist[1:4:2])
+
+# you can use slices to reverse a sequence
+print(mylist[::-1])
+
+# Tuples are like lists, but they are immutable
+mytuple = (0, 1, 2, "three")
+print(mytuple[1])
+
+# Sets are also sequences, but they contain unique values
+myset = {1, 2, 3, 2, 4, "hey"}
+print(myset)
+
+# Test for membership
+print(1 in mylist)
+print(3 in mytuple)
+print(5 in myset)
+
+# Dictionary: a key-value data structure
+mydict = {
+    "one" : 1, 
+    "two" : 2
+}
+
+# dictionaries are accessed via keys
+print(mydict["one"]) 

Finished/Ch2/conditionals_finished.py

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+# LinkedIn Learning Python course by Joe Marini
+# Example file for working with conditional statements
+
+
+x, y = 10, 100
+
+# conditional flow uses if, elif, else
+if x < y:
+    print("x is less than y")
+elif x == y:
+    print("x is same as y")
+else:
+    print("x is greater than y")
+
+# conditional statements let you use "a if C else b"
+result = "x is less than y" if (x < y) else "x is greater than or equal to y"
+print(result)

Finished/Ch2/functions_finished.py

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+# LinkedIn Learning Python course by Joe Marini
+# Example file for working with functions
+
+
+# define a basic function
+def hello_func():
+    print("hello world!")
+    name = input("What is your name? ")
+    print("Nice to meet you,", name)
+
+hello_func()
+
+# function that takes parameters and returns a value
+def cube(x):
+    return x*x*x
+
+result = cube(3)
+print(result)
+
+# function with default value for an argument
+def hello_func(greeting, name=None):
+    print("hello world!")
+    if name == None:
+        name = input("What is your name? ")
+    print(greeting, name)
+
+hello_func("Nice to meet you", "Mike")
+hello_func(name="Joe", greeting="Hi there,")
+
+# function with variable number of arguments
+def multi_add(start, *args):
+    result = start
+    for x in args:
+        result = result + x
+    return result
+
+print(multi_add(10,4,5,10,4))

Finished/Ch2/helloworld_finished.py

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+# LinkedIn Learning Python course by Joe Marini
+# Example file for HelloWorld
+
+
+print("hello world!")
+name = input("What is your name? ")
+print("Nice to meet you,", name)

Finished/Ch2/loops_finished.py

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+# LinkedIn Learning Python course by Joe Marini
+# Example file for working with loops
+
+
+x = 0
+
+# define a while loop
+while (x < 5):
+    print(x)
+    x = x + 1
+
+answer = input("Should I stop?")
+while answer != "yes":
+  print(answer)
+  answer = input("Should I stop?")
+
+# use a for loop over a collection
+days = ["Mon","Tue","Wed","Thu","Fri","Sat","Sun"]
+for d in days:
+    print(d)
+
+# use the break and continue statements
+for d in days:
+    # if (d == "Wed"): 
+    #     break
+    # if (d == "Thu"): 
+    #     continue
+    print(d)
+
+# using the enumerate() function to get an index and an item 
+days = ["Mon","Tue","Wed","Thu","Fri","Sat","Sun"]
+for i, d in enumerate(days):
+    print(i, d)

Finished/Ch2/numcounter_finished.py

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+# LinkedIn Learning Python course by Joe Marini
+# Solution for the number counter challenge
+
+def count_numbers(which, nums):
+    if which != "even" and which != "odd":
+        return -1
+    
+    result = 0
+    for num in nums:
+        if which == "even" and num % 2 == 0:
+            result += 1
+        if which == "odd" and num % 2 != 0:
+            result += 1
+    return result
+
+
+print(count_numbers("even", [1,4,7,10,19,21,24,13,14]))
+print(count_numbers("odd", [1,4,7,10,19,21,24,13,14]))
+print(count_numbers("blarg", [1,4,7,10,19,21,24,13,14]))

Finished/Ch2/variables_finished.py

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+# LinkedIn Learning Python course by Joe Marini
+# Example file for variables and basic types
+
+
+# Basic data types in Python: Numbers, Strings, Booleans 
+# Variable names must start with a letter or _, and can have numbers. They are case sensitive. 
+myint = 10
+myfloat = 13.2576
+mystr = "This is a string"
+mybool = True
+
+# We can display the content of a variable using the print() function
+print(myint)
+print(mystr)
+
+# Operators are used to perform operations on variables
+print(myint * myfloat)
+print(myint % 3)
+
+another_str = "This is another string"
+print(mystr + another_str)
+print("nom " * 3)
+
+# Logical and comparison operators 
+print(myint == 10)
+print(myfloat != 20)
+print(myint > 5 and myfloat < 25.0)
+
+# re-declaring a variable works
+myint = "abc"
+print(myint)

Finished/Ch3/builtin_finished.py

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+# LinkedIn Learning Python course by Joe Marini
+# Example file for using built-in functions
+#
+
+mystring = "The quick, brown fox jumped over the lazy dog!"
+mynumbers = [1,3,5,6,9,12,14,17,20,30]
+
+# the len() function calculates the length of a sequence
+print(len(mystring))
+print(len(mynumbers))
+
+# the max() and min() functions will find the largest and smallest value in a sequence
+print(max(mynumbers))
+print(min(mynumbers))
+
+# the str() function will return a string version of an object
+prefix = "result: "
+result = 5
+print(prefix + str(result))
+print(str(3.1415))
+
+# range(start, stop, step) will create a range of numbers 
+# You can use ranges along with loops 
+for i in range(5,len(mystring),2):
+    print(mystring[i])
+
+# the print function itself is pretty flexible - you can embed variables directly in it
+greeting = "Hello!"
+count = 10
+print(f"{greeting} you are visitor number {count}")

Finished/Ch3/classes_finished.py

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+# LinkedIn Learning Python course by Joe Marini
+# Example file for working with classes
+#
+
+class Vehicle:
+    def __init__(self, bodystyle):
+        self.bodystyle = bodystyle
+
+    def drive(self, speed):
+        self.mode = "driving"
+        self.speed = speed
+
+
+class Car(Vehicle):
+    def __init__(self, enginetype):
+        super().__init__("Car")
+        self.wheels = 4
+        self.doors = 4
+        self.engine = enginetype
+
+    def drive(self, speed):
+        super().drive(speed)
+        print("Driving my", self.engine, "Car at ", self.speed)
+
+
+class Motorcycle(Vehicle):
+    def __init__(self, enginetype, hassidecar):
+        super().__init__("Motorcycle")
+        if (hassidecar):
+            self.wheels = 2
+        else:
+            self.wheels = 3
+        self.doors = 0
+        self.engine = enginetype
+
+    def drive(self, speed):
+        super().drive(speed)
+        print("Driving my", self.engine, "motorcylce at ", self.speed)
+
+
+car1 = Car("gas")
+car2 = Car("electric")
+mc1 = Motorcycle("gas", True)
+
+print(mc1.wheels)
+print(car1.engine)
+print(car2.doors)
+
+car1.drive(30)
+car2.drive(40)
+mc1.drive(50)