markdown exercise attempt

python/markdown/.exercism/metadata.json

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+{"track":"python","exercise":"markdown","id":"75a6c2148fe940eb841a8ebc24e8b6ad","url":"https://exercism.io/my/solutions/75a6c2148fe940eb841a8ebc24e8b6ad","handle":"Xevion","is_requester":true,"auto_approve":false}

python/markdown/README.md

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+# Markdown
+
+Refactor a Markdown parser.
+
+The markdown exercise is a refactoring exercise. There is code that parses a
+given string with [Markdown
+syntax](https://guides.github.com/features/mastering-markdown/) and returns the
+associated HTML for that string. Even though this code is confusingly written
+and hard to follow, somehow it works and all the tests are passing! Your
+challenge is to re-write this code to make it easier to read and maintain
+while still making sure that all the tests keep passing.
+
+It would be helpful if you made notes of what you did in your refactoring in
+comments so reviewers can see that, but it isn't strictly necessary. The most
+important thing is to make the code better!
+
+## Exception messages
+
+Sometimes it is necessary to raise an exception. When you do this, you should include a meaningful error message to
+indicate what the source of the error is. This makes your code more readable and helps significantly with debugging. Not
+every exercise will require you to raise an exception, but for those that do, the tests will only pass if you include
+a message.
+
+To raise a message with an exception, just write it as an argument to the exception type. For example, instead of
+`raise Exception`, you should write:
+
+```python
+raise Exception("Meaningful message indicating the source of the error")
+```
+
+## Running the tests
+
+To run the tests, run the appropriate command below ([why they are different](https://github.com/pytest-dev/pytest/issues/1629#issue-161422224)):
+
+- Python 2.7: `py.test markdown_test.py`
+- Python 3.4+: `pytest markdown_test.py`
+
+Alternatively, you can tell Python to run the pytest module (allowing the same command to be used regardless of Python version):
+`python -m pytest markdown_test.py`
+
+### Common `pytest` options
+
+- `-v` : enable verbose output
+- `-x` : stop running tests on first failure
+- `--ff` : run failures from previous test before running other test cases
+
+For other options, see `python -m pytest -h`
+
+## Submitting Exercises
+
+Note that, when trying to submit an exercise, make sure the solution is in the `$EXERCISM_WORKSPACE/python/markdown` directory.
+
+You can find your Exercism workspace by running `exercism debug` and looking for the line that starts with `Workspace`.
+
+For more detailed information about running tests, code style and linting,
+please see [Running the Tests](http://exercism.io/tracks/python/tests).
+
+## Submitting Incomplete Solutions
+
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.

python/markdown/markdown.py

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+import re
+
+def parse(markdown):
+    lines = markdown.split('\n')
+    res = ''
+    in_list = False
+    in_list_append = False
+    for line in lines:
+        if re.match('###### (.*)', line) is not None:
+            line = '<h6>' + line[7:] + '</h6>'
+        elif re.match('## (.*)', line) is not None:
+            line = '<h2>' + line[3:] + '</h2>'
+        elif re.match('# (.*)', line) is not None:
+            line = '<h1>' + line[2:] + '</h1>'
+        m = re.match(r'\* (.*)', line)
+        if m:
+            in_list, is_bold, is_italic = not in_list, False, False
+            current_line = m.group(1)
+            # Bold
+            strongmatch = re.match('(.*)__(.*)__(.*)', current_line)
+            if strongmatch:
+                current_line = strongmatch.group(1) + '<strong>' + \
+                    strongmatch.group(2) + '</strong>' + strongmatch.group(3)
+                is_bold = True
+            # Italics
+            italicmatch = re.match('(.*)_(.*)_(.*)', current_line)
+            if italicmatch:
+                current_line = italicmatch.group(1) + '<em>' + italicmatch.group(2) + \
+                    '</em>' + italicmatch.group(3)
+                is_italic = True
+                
+            line = '<ul><li>' + current_line + '</li>' if not in_list else '<li>' + current_line + '</li>'
+        else:
+            if in_list:
+                in_list_append = True
+                in_list = False
+
+        m = re.match('<h|<ul|<p|<li', line)
+        if not m:
+            line = '<p>' + line + '</p>'
+        m = re.match('(.*)__(.*)__(.*)', line)
+        if m:
+            line = m.group(1) + '<strong>' + m.group(2) + '</strong>' + m.group(3)
+        m = re.match('(.*)_(.*)_(.*)', line)
+        if m:
+            line = m.group(1) + '<em>' + m.group(2) + '</em>' + m.group(3)
+        if in_list_append:
+            line = '</ul>' + line
+            in_list_append = False
+        res += line
+    if in_list:
+        res += '</ul>'
+    return res

python/markdown/markdown_test.py

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+import unittest
+from markdown import parse
+
+
+# Tests adapted from `problem-specifications//canonical-data.json` @ v1.4.0
+
+class MarkdownTest(unittest.TestCase):
+
+    def test_paragraph(self):
+        self.assertEqual(parse('This will be a paragraph'),
+                         '<p>This will be a paragraph</p>')
+
+    def test_italics(self):
+        self.assertEqual(parse('_This will be italic_'),
+                         '<p><em>This will be italic</em></p>')
+
+    def test_bold(self):
+        self.assertEqual(parse('__This will be bold__'),
+                         '<p><strong>This will be bold</strong></p>')
+
+    def test_mixed_normal_italics_and_bold(self):
+        self.assertEqual(parse('This will _be_ __mixed__'),
+                         '<p>This will <em>be</em> <strong>mixed</strong></p>')
+
+    def test_h1(self):
+        self.assertEqual(parse('# This will be an h1'),
+                         '<h1>This will be an h1</h1>')
+
+    def test_h2(self):
+        self.assertEqual(parse('## This will be an h2'),
+                         '<h2>This will be an h2</h2>')
+
+    def test_h6(self):
+        self.assertEqual(parse(
+            '###### This will be an h6'), '<h6>This will be an h6</h6>')
+
+    def test_unordered_lists(self):
+        self.assertEqual(parse('* Item 1\n* Item 2'),
+                         '<ul><li>Item 1</li>'
+                         '<li>Item 2</li></ul>')
+
+    def test_little_bit_of_everything(self):
+        self.assertEqual(parse(
+            '# Header!\n* __Bold Item__\n* _Italic Item_'),
+            '<h1>Header!</h1><ul><li><strong>Bold Item</strong></li>'
+            '<li><em>Italic Item</em></li></ul>')
+
+    def test_symbols_in_the_header_text_that_should_not_be_interpreted(self):
+        self.assertEqual(
+            parse('# This is a header with # and * in the text'),
+            '<h1>This is a header with # and * in the text</h1>')
+
+    def test_symbols_in_the_list_item_text_that_should_not_be_interpreted(
+            self):
+        self.assertEqual(
+            parse(
+                '* Item 1 with a # in the text\n* Item 2 with * in the text'),
+            '<ul><li>Item 1 with a # in the text</li>'
+            '<li>Item 2 with * in the text</li></ul>')
+
+    def test_symbols_in_the_paragraph_text_that_should_not_be_interpreted(
+            self):
+        self.assertEqual(
+            parse('This is a paragraph with # and * in the text'),
+            '<p>This is a paragraph with # and * in the text</p>')
+
+    def test_unordered_lists_close_properly_with_preceding_and_following_lines(
+            self):
+        self.assertEqual(
+            parse('# Start a list\n* Item 1\n* Item 2\nEnd a list'),
+            '<h1>Start a list</h1><ul><li>Item 1</li>'
+            '<li>Item 2</li></ul><p>End a list</p>')
+
+
+if __name__ == '__main__':
+    unittest.main()

python/markdown/tempCodeRunnerFile.py

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+i