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wrote advanced-unit-testing chapter, decided to merge it into unit-testing. renumbered chapters and fixed up TOC and navigation

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Mark Pilgrim
2009-07-25 15:31:55 -04:00
parent 71821cfadc
commit e5b43fb442
19 changed files with 187 additions and 1933 deletions
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@@ -5,7 +5,7 @@
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<style>
body{counter-reset:h1 3}
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@@ -264,12 +264,10 @@ experience of years.</samp>
<ol>
<li>The <code><dfn>split</dfn>()</code> string method takes one argument, a delimiter, and split a string into a list of strings based on the delimiter. Here, the delimiter is an ampersand character, but it could be anything.
<li>Now we have a list of strings, each with a key, followed by an equals sign, followed by a value. We want to iterate over the entire list and split each string into two strings based on the first equals sign. (In theory, a value could contain an equals sign too. If we just used <code>'key=value=foo'.split('=')</code>, we would end up with a three-item list <code>['key', 'value', 'foo']</code>.)
<li>Now we have a list of strings, each with a key, followed by an equals sign, followed by a value. We can use a <a href=comprehensions.html#list-comprehensions>list comprehension</a> to iterate over the entire list and split each string into two strings based on the first equals sign. (In theory, a value could contain an equals sign too. If we just used <code>'key=value=foo'.split('=')</code>, we would end up with a three-item list <code>['key', 'value', 'foo']</code>.)
<li>Finally, Python can turn that list-of-lists into a dictionary simply by passing it to the <code>dict()</code> function.
</ol>
<p>[FIXME - this is the first time we've seen a list comprehension. Add a forward or backward reference once we have a full section explaining them.]
<blockquote class=note>
<p><span class=u>&#x261E;</span>The previous example looks a lot like parsing query parameters in a <abbr>URL</abbr>, but real-life <abbr>URL</abbr> parsing is actually more complicated than this. If you&#8217;re dealing with <abbr>URL</abbr> query parameters, you&#8217;re better off using the <a href=http://docs.python.org/3.1/library/urllib.parse.html#urllib.parse.parse_qs><code>urllib.parse.parse_qs()</code></a> function, which handles some non-obvious edge cases.
</blockquote>
@@ -459,7 +457,7 @@ TypeError: Can't convert 'bytes' object to str implicitly</samp>
<li><a href=http://www.python.org/dev/peps/pep-3101/><abbr>PEP</abbr> 3101: Advanced String Formatting</a>
</ul>
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<p class=c>&copy; 2001&ndash;9 <a href=about.html>Mark Pilgrim</a>
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