completed half of the exercises

src/00_hello.py

@@ -1 +1,2 @@
-# Print "Hello, world!" to your terminal
+# Print "Hello, world!" to your terminal
+print('Hello World!')

src/01_bignum.py

@@ -1,4 +1,8 @@
 # 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
+a = 2
+b = 65536
+
+print(a**b)

src/02_datatypes.py

@@ -15,7 +15,11 @@
 
 # YOUR CODE HERE
 
+print(5 + int(y))
+
 
 # Write a print statement that combines x + y into the string value 57
 
-# YOUR CODE HERE
+# YOUR CODE HERE
+
+print(str(x) + y)

src/03_modules.py

@@ -4,28 +4,39 @@
 methods, and the os module, which gives you access to lower-
 level operating system functionality.
 """
-
+import os
 import sys
+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
+print(f'sysargv: {sys.argv} \n')
 
 # Print out the OS platform you're using:
 # YOUR CODE HERE
 
+print(f'OS platform: {sys.platform} \n')
+
 # Print out the version of Python you're using:
 # YOUR CODE HERE
 
+print(f'Python version: {sys.version} \n')
+
 
-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(f'Current Process:  {os.getpid()} \n')
+
 # Print the current working directory (cwd):
 # YOUR CODE HERE
 
+print(f'Current working directory (cwd): {os.getcwd()} \n')
+
 # Print out your machine's login name
 # YOUR CODE HERE
+
+print(f'Machine\'s login name: {getpass.getuser()} \n')

src/04_printing.py

@@ -12,6 +12,21 @@
 # y, and z:
 # x is 10, y is 2.25, z is "I like turtles!"
 
+print('x is %i, y is %.2f, z is %s' %(x, y, z))
+
 # Use the 'format' string method to print the same thing
 
-# Finally, print the same thing using an f-string
+print('x is {0}, y is {1:.2f}, z is {2}'.format(x, y, z))
+
+# Finally, print the same thing using an f-string
+print(f'x is {x}, y is {y:.2f}, z is {z}')
+
+class Animal:
+    def __init( self, name, hunger, diet ):
+        self.name = name
+        self.hunger = hunger
+        self.diet = diet
+
+    def eat(self, food, hunger):
+        if food > 0 and hunger < 25:
+            hunger += food

src/05_lists.py

@@ -8,22 +8,30 @@
 
 # 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
+x.extend(y)
 print(x)
 
 # Change x so that it is [1, 2, 3, 4, 9, 10]
 # YOUR CODE HERE
+del x[4]
 print(x)
 
 # Change x so that it is [1, 2, 3, 4, 9, 99, 10]
 # YOUR CODE HERE
+x.insert(5, 99)
 print(x)
 
 # Print the length of list x
 # YOUR CODE HERE
+print(len(x))
 
 # Print all the values in x multiplied by 1000
-# YOUR CODE HERE
+# YOUR CODE HERE
+
+for num in x:
+    print(num*1000)

src/06_tuples.py

@@ -37,8 +37,12 @@ def dist(a, b):
 # YOUR CODE HERE
 
 t = (1, 2, 5, 7, 99)
-print_tuple(t)  # Prints 1 2 5 7 99, one per line
+def print_tuple(t):
+    for num in t:
+        print(num)
+# Prints 1 2 5 7 99, one per line
+print_tuple(t)
 
 # 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 +12,26 @@
 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])
 
 # Output the last three elements in the array: [7, 9, 6]
-print()
+print(a[3:])
 
 # Output the two middle elements in the array: [1, 7]
-print()
+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[:-1])
 
 # For string s...
 
 s = "Hello, world!"
 
 # Output just the 8th-12th characters: "world"
-print()
+print(s[7:12])

src/08_comprehensions.py

@@ -10,14 +10,14 @@
 
 # Write a list comprehension to produce the array [1, 2, 3, 4, 5]
 
-y = []
+y = [i + 1 for i in range(5)]
 
 print (y)
 
 # 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 = [i**3 for i in range(10)]
 
 print(y)
 
@@ -26,7 +26,7 @@
 
 a = ["foo", "bar", "baz"]
 
-y = []
+y = [str.upper() for str in a]
 
 print(y)
 
@@ -35,7 +35,11 @@
 
 x = input("Enter comma-separated numbers: ").split(',')
 
+y= [int(num) % 2 == 0 for num in x ]
+
+print(y)
+
 # What do you need between the square brackets to make it work?
-y = []
+# y = []
 
 print(y)

src/09_dictionaries.py

@@ -35,6 +35,11 @@
 
 # Add a new waypoint to the list
 # YOUR CODE HERE
+waypoints.append({
+    "lat": 24,
+    "lon": -232,
+    "name": "the last place"
+})
 
 # Modify the dictionary with name "a place" such that its longitude
 # value is -130 and change its name to "not a real place"
@@ -43,5 +48,13 @@
 
 # YOUR CODE HERE
 
+waypoints[0]['name'] = 'not a real place'
+waypoints[0]['lon'] = -130
+
+# print(waypoints)
+
 # Write a loop that prints out all the field values for all the waypoints
-# YOUR CODE HERE
+# YOUR CODE HERE
+
+for d in waypoints:
+    print(d)

src/10_functions.py

@@ -10,3 +10,10 @@
 
 # YOUR CODE HERE
 
+while num:
+    if num % 2 == 0:
+        print('Even!')
+        break
+    else:
+        print('Odd!')
+        break

src/11_args.py

@@ -5,6 +5,8 @@
 # the sum. This is what you'd consider to be a regular, normal function.
 
 # YOUR CODE HERE
+def f1(x, y):
+    return x + y
 
 print(f1(1, 2))
 
@@ -14,6 +16,9 @@
 
 # YOUR CODE HERE
 
+def f2(*args):
+    return sum(args)
+
 print(f2(1))                    # Should print 1
 print(f2(1, 3))                 # Should print 4
 print(f2(1, 4, -12))            # Should print -7
@@ -22,14 +27,18 @@
 a = [7, 6, 5, 4]
 
 # How do you have to modify the f2 call below to make this work?
-print(f2(a))    # Should print 22
+print(f2(*a))    # Should print 22
 
-# Write a function f3 that accepts either one or two arguments. If one argument,
-# it returns that value plus 1. If two arguments, it returns the sum of the
-# arguments.
-# Note: Google "python default arguments" for a hint.
+# # Write a function f3 that accepts either one or two arguments. If one argument,
+# # it returns that value plus 1. If two arguments, it returns the sum of the
+# # arguments.
+# # Note: Google "python default arguments" for a hint.
+
+# # YOUR CODE HERE
+
+def f3(a, b=1):
+    return a + b
 
-# YOUR CODE HERE
 
 print(f3(1, 2))  # Should print 3
 print(f3(8))     # Should print 9
@@ -45,6 +54,10 @@
 
 # YOUR CODE HERE
 
+def f4(**kwargs):
+    for key, value in kwargs.items():
+        print(f'key: {key}, value: {value}')
+
 # Should print
 # key: a, value: 12
 # key: b, value: 30
@@ -62,4 +75,4 @@
 }
 
 # How do you have to modify the f4 call below to make this work?
-f4(d)
+f4(**d)

src/12_scopes.py

@@ -5,7 +5,8 @@
 x = 12
 
 def change_x():
-    x = 99
+   global x
+   x = 99
 
 change_x()
 
@@ -19,6 +20,7 @@ def outer():
     y = 120
 
     def inner():
+        nonlocal y
         y = 999
 
     inner()

src/13_file_io.py

@@ -11,9 +11,25 @@
 
 # YOUR CODE HERE
 
+with open('foo.txt') as f:
+    read_data = f.read()
+
+print(read_data + '\n')
+print(f.closed + '\n')
+
 # Open up a file called "bar.txt" (which doesn't exist yet) for
 # writing. Write three lines of arbitrary content to that file,
 # then close the file. Open up "bar.txt" and inspect it to make
 # sure that it contains what you expect it to contain
 
-# YOUR CODE HERE
+# YOUR CODE HERE
+
+with open('bar.txt', 'w+') as f:
+    write_data = f.write('Some stuff,\nsome more stuff,\nanother instance of stuff')
+
+    f.seek(0)
+
+    data = f.read()
+
+print(data + '\n')
+print(f.closed)