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README

Some Python tools.

Context manager for file I/O

A "context manager" imposes a beginning and end on some process that can cause problems if interrupted midway through. In the case of file I/O, if a file is opened for reading or writing and then not closed properly, it can be left in a locked state. A context manager (initiated by the with keyword) ensure that the file is closed in any case. Example

with open('questions_and_answers.json', 'r') as f:

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Make a Differ-Patcher

General information about the Iron Forger project at Hacker School.

Assignment: Build a tool to compare two text files and generate a diff — a file that concisely specifies the differences between the two other files.

What a diff file looks like

A "diff" file has the following structure:

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Weather Study To-Do List

To build

• Finish handling the None issue in MatPlotLib implementation.
• Consider changing compression module to shutil (http://chimera.labs.oreilly.com/books/1230000000393/ch13.html#_problem_218).
• Replace SQL code with SQLAlchemy code.
• Test suite. Above all: to confirm data integrity.
• Place name of data source and and license information on site.

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In [1]: import dis

In [2]: def f(): return ["foo" for i in range(10)]

In [3]: dis.dis(f)
  1           0 LOAD_CONST               1 (<code object <listcomp> at 0x1062e14b0, file "<ipython-input-16-3cb1faa7b4d7>", line 1>) 
              3 LOAD_CONST               2 ('f.<locals>.<listcomp>') 
              6 MAKE_FUNCTION            0 
              9 LOAD_GLOBAL              0 (range) 
             12 LOAD_CONST               3 (10)