Basics

src/00_hello.py

@@ -1 +1,4 @@
-# Print "Hello, world!" to your terminal
+# Print "Hello, world!" to your terminal
+
+hello = "Hello , world"
+print(hello)

src/01_bignum.py

@@ -1,4 +1,5 @@
 # Print out 2 to the 65536 power
 # (try doing the same thing in the JS console and see what it outputs)
 
-# YOUR CODE HERE
+# YOUR CODE HERE
+print(2**65536)

src/02_datatypes.py

@@ -14,8 +14,10 @@
 # Write a print statement that combines x + y into the integer value 12
 
 # YOUR CODE HERE
-
+#print(f'{x} + {y} = 12')
+print(int(y) + x)
 
 # Write a print statement that combines x + y into the string value 57
 
-# YOUR CODE HERE
+# YOUR CODE HERE
+print(f'{x}{y}')

src/03_modules.py

@@ -6,26 +6,65 @@
 """
 
 import sys
+import argparse
+import platform
+import os
+import getpass
 # See docs for the sys module: https://docs.python.org/3.7/library/sys.html
 
 # Print out the command line arguments in sys.argv, one per line:
 # YOUR CODE HERE
 
+# Total Arguments:
+n = len(sys.argv)
+print("Total arguments passed:", n)
+
+# Arguments passed:
+print("\nName of Python script:", sys.argv[0])
+
+print("\nArguments passed:", end = " ")
+for i in range(1, n):
+    print(sys.argv[i], end = " ")
+
+# Addition of numbers:
+Sum = 0
+# Using argparse module
+for i in range(1, n):
+    Sum += int(sys.argv[i])
+    print("\n\nResult:", Sum)
+
+# for arg in sys.argv[1:]:
+#     print(arg)
+
 # Print out the OS platform you're using:
 # YOUR CODE HERE
+print("My OS is:", os.name)
 
 # Print out the version of Python you're using:
 # YOUR CODE HERE
 
+print("My Python Version is:", sys.version)
+print("My Python Version Info is:", sys.version_info)
 
 import os
 # See the docs for the OS module: https://docs.python.org/3.7/library/os.html
 
 # Print the current process ID
 # YOUR CODE HERE
 
+print("This is my Process ID:", os.getpid())
+
 # Print the current working directory (cwd):
 # YOUR CODE HERE
 
+print("My Current working directory:", os.getcwd())
+
+
 # Print out your machine's login name
 # YOUR CODE HERE
+
+username = os.getuid()
+username2 = getpass.getuser()
+
+print("My Computer Username2 is:", username2)
+print("My Computer Username is:", username)

src/04_printing.py

@@ -12,6 +12,16 @@
 # y, and z:
 # x is 10, y is 2.25, z is "I like turtles!"
 
+print("x: %2d, y: %2.2f, z: \"%s\"" %(x, y, z))
+
+print("==========================================")
+
 # Use the 'format' string method to print the same thing
 
-# Finally, print the same thing using an f-string
+print("x = {} \ny = {:.2f} \nz = \"{}\"".format(x, y, z))
+
+print("==========================================")
+
+# Finally, print the same thing using an f-string
+
+print(f"x = {x}, \ny = {y:.2f}, \nz = \"{z}\"")

src/05_lists.py

@@ -8,22 +8,38 @@
 
 # Change x so that it is [1, 2, 3, 4]
 # YOUR CODE HERE
+x.append(4)
 print(x)
 
 # Using y, change x so that it is [1, 2, 3, 4, 8, 9, 10]
 # YOUR CODE HERE
+
+# This could be written also like this:
+#newArray = []
+#newArray.append(x + y)
+# x = newArray
+
+x += y
 print(x)
 
 # Change x so that it is [1, 2, 3, 4, 9, 10]
 # YOUR CODE HERE
+x.remove(8)
 print(x)
 
 # Change x so that it is [1, 2, 3, 4, 9, 99, 10]
 # YOUR CODE HERE
+
+x.insert(5, 99)  # We're making sure that we're specifying the index first and the number we want to add to the list.
 print(x)
 
 # Print the length of list x
 # YOUR CODE HERE
 
+print(len(x))
+print(x.count)
+
 # Print all the values in x multiplied by 1000
-# YOUR CODE HERE
+# YOUR CODE HERE
+
+print(list(map(lambda a: a*1000, x)))

src/06_tuples.py

@@ -33,12 +33,14 @@ def dist(a, b):
 
 
 # Write a function `print_tuple` that prints all the values in a tuple
-
 # YOUR CODE HERE
+def print_tuple(tuple):
+    for element in tuple:
+        print(element)
 
 t = (1, 2, 5, 7, 99)
 print_tuple(t)  # Prints 1 2 5 7 99, one per line
 
 # Declare a tuple of 1 element then print it
-u = (1)  # What needs to be added to make this work?
+u = (1,)  # What needs to be added to make this work?
 print_tuple(u)

src/07_slices.py

@@ -12,26 +12,41 @@
 a = [2, 4, 1, 7, 9, 6]
 
 # Output the second element: 4:
-print()
+print(a[1])
 
 # Output the second-to-last element: 9
-print()
+print(a[-2])
+# print(a[-2]) This print the second to last element of the array, no matter hon long the array is.
+# print(a[:4]) This prints [2, 4, 1, 7]
+# print(a[4:]) Starts at 4 and includes the las number of the array.
 
 # Output the last three elements in the array: [7, 9, 6]
-print()
+print(a[-3:])
+
+myArray = [2, 4, 1, 7, 9, 6]
+myNewArray = []
+
+for (index, numbers) in enumerate(myArray):
+    if index >= len(myArray) - 3:
+        myNewArray.append(numbers)
+print(myNewArray)
+
 
 # Output the two middle elements in the array: [1, 7]
-print()
+print(a[2:4])
+print(a[2:4:])
 
 # Output every element except the first one: [4, 1, 7, 9, 6]
-print()
+print(a[1:])
 
 # Output every element except the last one: [2, 4, 1, 7, 9]
-print()
+print(a[:5])
+print(a[:6:2]) #This is includes all the negative numbers (wrap around) from -1, -2, -3, -4, -5 **** The third number shows how the steping should be. 
+print(a[:-1])  #It prints the entire list up to the last number, we're just using the wrap around system with negative numbers using the negative index.
 
 # For string s...
 
 s = "Hello, world!"
 
 # Output just the 8th-12th characters: "world"
-print()
+print(s[7:12])

src/08_comprehensions.py

@@ -9,33 +9,52 @@
 """
 
 # Write a list comprehension to produce the array [1, 2, 3, 4, 5]
+# Do a For in loop in one line and a regular For in loop.
 
-y = []
+y = [n for n in range(1, 6)]  # Same line For in loop.
+print ("This is the short version:", y)
 
-print (y)
+#Long version:
+y1 = []
+for num in range(1, 6):
+    y1.append(num)
+    print("This is the long version:", y1)
 
 # Write a list comprehension to produce the cubes of the numbers 0-9:
 # [0, 1, 8, 27, 64, 125, 216, 343, 512, 729]
 
-y = []
+y = [n**3 for n in range(10)]
+print("This is the short version:", y)
 
-print(y)
+#Long version:
+y2 = []
+
+for num1 in range(10):
+    y2.append(num1 ** 3)
+    print("This is my long version", y2)
 
 # Write a list comprehension to produce the uppercase version of all the
 # elements in array a. Hint: "foo".upper() is "FOO".
 
 a = ["foo", "bar", "baz"]
 
-y = []
+y = [word.upper() for word in a]
+print("This is the short version:", y)
 
-print(y)
+# The long version:
+a1 = ["foo", "bar", "baz"]
+y3 = []
+for word in a1:
+    y3.append(word.upper())
+    print("This is the long version:", y3)
 
 # Use a list comprehension to create a list containing only the _even_ elements
 # the user entered into list x.
 
+print("Please enter a number:")
 x = input("Enter comma-separated numbers: ").split(',')
+print(x)
 
 # What do you need between the square brackets to make it work?
-y = []
-
-print(y)
+y = [num for num in x if int(num) %2 == 0]
+#print(y)

src/09_dictionaries.py

@@ -15,6 +15,8 @@
  - name: a name string for this location
 """
 
+import json
+
 waypoints = [
     {
         "lat": 43,
@@ -36,12 +38,43 @@
 # Add a new waypoint to the list
 # YOUR CODE HERE
 
+
+print("\n\n=========================================")
+print("\n\nThis is how a json list is printed out on Python")
+waypoints.append(   {
+
+        "lat": 120,
+        "lon": -11,
+        "name": "A place"
+})
+
+print("\nThis is my waypoint:", waypoints)
+
+json_data = '[{"ID":10,"Name":"Pankaj","Role":"CEO"},' \
+            '{"ID":20,"Name":"David Lee","Role":"Editor"}]'
+json_object = json.loads(json_data)
+json_formatted_str = json.dumps(json_object, indent=2)
+print(json_formatted_str)
+
+print("\n\nAnother way to add waypoint to the list: ====================")
+anotherPlace = { "lat": 42, "lon": -120, "name": "a fourth place"}
+waypoints.append(anotherPlace)
+print(waypoints)
+
+
 # Modify the dictionary with name "a place" such that its longitude
 # value is -130 and change its name to "not a real place"
 # Note: It's okay to access the dictionary using bracket notation on the
 # waypoints list.
 
 # YOUR CODE HERE
+waypoints[0]["lon"] = -130
+waypoints[0]["name"] = "not a real place"
 
 # Write a loop that prints out all the field values for all the waypoints
-# YOUR CODE HERE
+# YOUR CODE HERE
+
+for i, waypoint in enumerate(waypoints):
+    print(f"Waypoint #{i + 1}")
+    for key, value in waypoint.items():
+        print(f" { key }: {value}")

src/10_functions.py

@@ -1,6 +1,8 @@
 # Write a function is_even that will return true if the passed-in number is even.
 
 # YOUR CODE HERE
+def isEven(n):
+    return n % 2 == 0
 
 # Read a number from the keyboard
 num = input("Enter a number: ")
@@ -10,3 +12,8 @@
 
 # YOUR CODE HERE
 
+if isEven(num):
+    print("Even!")
+else:
+    print("Odd!")
+