Complete Assignment

src/06_tuples.py

@@ -35,10 +35,13 @@ def dist(a, b):
 # Write a function `print_tuple` that prints all the values in a tuple
 
 # YOUR CODE HERE
+def print_tuple(tup_input):
+    for item in tup_input:
+        print(item)
 
 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 +12,35 @@
 a = [2, 4, 1, 7, 9, 6]
 
 # Output the second element: 4:
-print()
+print('Output the second element: 4:')
+print(a[1])
 
 # Output the second-to-last element: 9
-print()
+print('Output the second-to-last element: 9')
+print(a[-2])
 
 # Output the last three elements in the array: [7, 9, 6]
-print()
+print('Output the last three elements in the array: [7, 9, 6]')
+print(a[-3:])
 
 # Output the two middle elements in the array: [1, 7]
-print()
+print('Output the two middle elements in the array: [1, 7]')
+middle = int(len(a)/2)
+print(a[middle])
+# can't output two in the middle
 
 # Output every element except the first one: [4, 1, 7, 9, 6]
-print()
+print('Output every element except the first one: [4, 1, 7, 9, 6]')
+print(a[1:])
 
 # Output every element except the last one: [2, 4, 1, 7, 9]
-print()
+print('Output every element except the last one: [2, 4, 1, 7, 9]')
+print(a[:-1])
 
 # For string s...
 
 s = "Hello, world!"
 
 # Output just the 8th-12th characters: "world"
-print()
+print('Output just the 8th-12th characters: "world"')
+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 = [item for item in range(1, 6)]
 
-print (y)
+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 = [item**3 for item in range(10)]
 
 print(y)
 
@@ -26,16 +26,16 @@
 
 a = ["foo", "bar", "baz"]
 
-y = []
+y = [item.upper() for item in a]
 
 print(y)
 
 # Use a list comprehension to create a list containing only the _even_ elements
 # the user entered into list x.
 
 x = input("Enter comma-separated numbers: ").split(',')
-
+print(x)
 # What do you need between the square brackets to make it work?
-y = []
+y = [int(item) for item in x if int(item) % 2 == 0]
 
-print(y)
+print(y)

src/09_dictionaries.py

@@ -35,13 +35,21 @@
 
 # Add a new waypoint to the list
 # YOUR CODE HERE
-
+waypoints.append({
+    "lat": 45,
+    "lon": -101,
+    "name": "a new waypoint"
+})
 # 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 item in waypoints:
+    print(item)

src/10_functions.py

@@ -1,6 +1,9 @@
 # Write a function is_even that will return true if the passed-in number is even.
 
 # YOUR CODE HERE
+def is_even(val):
+    return True if val % 2 == 0 else None
+
 
 # Read a number from the keyboard
 num = input("Enter a number: ")
@@ -9,4 +12,7 @@
 # Print out "Even!" if the number is even. Otherwise print "Odd"
 
 # YOUR CODE HERE
-
+if is_even(num):
+    print("Even")
+else:
+    print("Odd")

src/11_args.py

@@ -6,6 +6,10 @@
 
 # YOUR CODE HERE
 
+def f1(*arg):
+    return int(arg[0]) + int(arg[1])
+
+
 print(f1(1, 2))
 
 # Write a function f2 that takes any number of integer arguments and returns the
@@ -14,6 +18,11 @@
 
 # YOUR CODE HERE
 
+
+def f2(*args):
+    return sum(int(item) for item in args)
+
+
 print(f2(1))                    # Should print 1
 print(f2(1, 3))                 # Should print 4
 print(f2(1, 4, -12))            # Should print -7
@@ -22,7 +31,7 @@
 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
@@ -31,6 +40,14 @@
 
 # YOUR CODE HERE
 
+
+def f3(*args):
+    if len(args) == 1:
+        return args[0]+1
+    elif len(args) == 2:
+        return args[0]+args[1]
+
+
 print(f3(1, 2))  # Should print 3
 print(f3(8))     # Should print 9
 
@@ -44,6 +61,10 @@
 # Note: Google "python keyword arguments".
 
 # YOUR CODE HERE
+def f4(**kwargs):
+    for key in kwargs:
+        print(f'key: {key}, value: {kwargs[key]}')
+
 
 # Should print
 # key: a, value: 12
@@ -62,4 +83,4 @@
 }
 
 # How do you have to modify the f4 call below to make this work?
-f4(d)
+f4(**d)

src/12_scopes.py

@@ -4,9 +4,11 @@
 # When you use a variable in a function, it's local in scope to the function.
 x = 12
 
+
 def change_x():
     x = 99
 
+
 change_x()
 
 # This prints 12. What do we have to modify in change_x() to get it to print 99?
@@ -19,6 +21,7 @@ def outer():
     y = 120
 
     def inner():
+        nonlocal y
         y = 999
 
     inner()

src/13_file_io.py

@@ -11,9 +11,17 @@
 
 # YOUR CODE HERE
 
+with open("src/foo.txt", mode='r', encoding='utf-8') as f:
+    print(f.read())
+
 # 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("src/bar.txt", mode="w+") as f:
+    for i in range(3):
+        f.write("this is line %d\r\n" % (i+1))
+with open("src/bar.txt", mode='r', encoding='utf-8') as f:
+    print(f.read())

src/14_cal.py

@@ -18,15 +18,41 @@
    the format that your program expects arguments to be given.
    Then exit the program.
 
-Note: the user should provide argument input (in the initial call to run the file) and not 
+Note: the user should provide argument input (in the initial call to run the file) and not
 prompted input. Also, the brackets around year are to denote that the argument is
 optional, as this is a common convention in documentation.
 
-This would mean that from the command line you would call `python3 14_cal.py 4 2015` to 
-print out a calendar for April in 2015, but if you omit either the year or both values, 
+This would mean that from the command line you would call `python3 14_cal.py 4 2015` to
+print out a calendar for April in 2015, but if you omit either the year or both values,
 it should use today’s date to get the month and year.
 """
 
 import sys
 import calendar
-from datetime import datetime
+from datetime import datetime, date
+
+
+def get_calendar():
+    c = calendar.TextCalendar()
+
+    dt = datetime.today()
+
+    user_input = sys.argv[1:]
+
+    len_input = len(user_input)
+
+    if len_input == 0:
+        year = dt.year
+        month = dt.month
+    elif len_input == 1:
+        year = dt.year
+        month = int(user_input[0])
+    elif len_input == 2:
+        year = int(user_input[1])
+        month = int(user_input[0])
+
+    str = c.formatmonth(year, month)
+    return str
+
+
+print(get_calendar())

src/15_classes.py

@@ -2,20 +2,47 @@
 # constructor
 
 # YOUR CODE HERE
+class LatLon:
+    def __init__(self, lat=41.705, lon=44.052):
+        self.lat = lat
+        self.lon = lon
+
 
 # Make a class Waypoint that can be passed parameters `name`, `lat`, and `lon` to the
 # constructor. It should inherit from LatLon. Look up the `super` method.
 
 # YOUR CODE HERE
+class Waypoint(LatLon):
+    def __init__(self, lat, lon, name='point x'):
+        self.name = name
+        super().__init__(lat, lon)
+
+    def __str__(self):
+        return f'Waypont name: {self.name}, lattitude: {self.lat}, longitude: {self.lon}'
 
 # Make a class Geocache that can be passed parameters `name`, `difficulty`,
 # `size`, `lat`, and `lon` to the constructor. What should it inherit from?
 
 # YOUR CODE HERE
 
+
+class Geocache(Waypoint):
+    def __init__(self, lat, lon, name, difficulty=1, size=1):
+        self.difficulty = difficulty
+        self.size = size
+        super().__init__(lat, lon, name)
+
+    def __str__(self):
+        return f'Geocach name: {self.name}, lat: {self.lat}, lon: {self.lon}, diff: {self.difficulty}, size: {self.size}'
+
 # Make a new waypoint and print it out: "Catacombs", 41.70505, -121.51521
 
+
 # YOUR CODE HERE
+waypoint = Waypoint(41.70505, -121.51521, "Catacombs")
+print(waypoint.lat)
+print(waypoint.lon)
+print(waypoint.name)
 
 # Without changing the following line, how can you make it print into something
 # more human-readable? Hint: Look up the `object.__str__` method
@@ -24,6 +51,6 @@
 # Make a new geocache "Newberry Views", diff 1.5, size 2, 44.052137, -121.41556
 
 # YOUR CODE HERE
-
+geocache = Geocache(44.052137, -121.41556, 'Newberry Views', 1.5, 2)
 # Print it--also make this print more nicely
 print(geocache)

src/bar.txt

@@ -0,0 +1,3 @@
+this is line 1
+this is line 2
+this is line 3