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Beej Jorgensen
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‎README.md

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@@ -70,11 +70,14 @@ Suggested order for implementing the toy programs:
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* `hello` -- Hello world
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* `bignum` -- Print some big numbers
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* `datatypes` -- Experiment with type conversion
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* `modules` -- Learn to import from modules
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* `printf` -- Formatted print output
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* `lists` -- Python's version of arrays
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* `slice` -- Accessing parts of lists
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* `comp` -- List comprehensions
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* `dicts` -- Dictionaries
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* `func` -- Functions
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* `fileio` -- Read and write from files
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* `cal` -- Experiment with module imports
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* `obj` -- Classes and objects
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‎src/comp.py

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# Write a list comprehension to produce the array [1, 2, 3, 4, 5]
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y = []
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print (y)
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# Write a list comprehension to produce the cubes of the numbers 0-9:
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# [0, 1, 8, 27, 64, 125, 216, 343, 512, 729]
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y = []
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print(y)
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# Write a list comprehension to produce the uppercase version of all the
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# elements in array a. Hint: "foo".upper() is "FOO".
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a = ["foo", "bar", "baz"]
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y = []
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print(y)
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# Use a list comprehension to create a list containing only the _even_ elements
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# the user entered into list x.
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‎src/dicts.py

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# Make up three entries of various values.
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waypoints = [
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{
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"lat": 43,
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"lon": -121,
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"name": "a place"
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},
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{
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"lat": 41,
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"lon": -123,
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"name": "another place"
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},
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{
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"lat": 43,
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"lon": -122,
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"name": "a third place"
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}
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]
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# Write a loop that prints out all the field values for all the waypoints
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# Add a new waypoint to the list

‎src/fileio.py

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# Use open to open file "foo.txt" for reading
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# Print all the lines in the file
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# Close the file
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# Use open to open file "bar.txt" for writing
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# Use the write() method to write three lines to the file
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# Close the file

‎src/foo.txt

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Do you bite your thumb at us, sir?
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I do bite my thumb, sir.
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Do you bite your thumb at us, sir?
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No, sir. I do not bite my thumb at you, sir, but I bite my thumb, sir.
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Do you quarrel, sir?
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Quarrel, sir? No, sir.

‎src/modules.py

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import sys
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import os
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# Module "sys"
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#
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# See docs for the sys module: https://docs.python.org/3.7/library/sys.html
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# Print out the command line arguments in sys.argv, one per line:
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# Print out the plaform from sys:
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print()
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# Print out the Python version from sys:
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print()
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# Module "os"
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#
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# See the docs for the OS module: https://docs.python.org/3.7/library/os.html
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# Print the current process ID
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print()
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# Print the current working directory (cwd):
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print()
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# Print your login name
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print()
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‎src/slice.py

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a = [2, 4, 1, 7, 9, 6]
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# Output the second element: 4:
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print()
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# Output the second-to-last element: 9
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print()
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# Output the last three elements in the array: [7, 9, 6]
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print()
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# Output the two middle elements in the array: [1, 7]
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print()
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# Output every element except the first one: [4, 1, 7, 9, 6]
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print()
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# Output every element except the last one: [2, 4, 1, 7, 9]
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print()
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# For string s...
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s = "Hello, world!"
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# Output just the 8th-12th characters: "world"
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print()

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