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This includes shortening the filename of notebook 01
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Alexander Hess 2019-09-24 19:44:39 +02:00
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02_functions.ipynb
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@ -635,7 +635,7 @@
"source": [
"Code gets even more confusing when variables by the same name from different scopes collide. In particular, what should we expect to happen if a function changes a globally defined variable internally?\n",
"\n",
"`average_odds()` below works like `average_evens()` above except that it **[casts](https://en.wikipedia.org/wiki/Type_conversion)** (i.e., \"converts\") the elements of `numbers` as objects of type `int` with the [int()](https://docs.python.org/3/library/functions.html#int) built-in first before filtering and averaging them. In doing so, it introduces an *internal* variable `nums` whose name collides with the one in the global scope."
"`average_odds()` below works like `average_evens()` above except that it **[casts](https://en.wikipedia.org/wiki/Type_conversion)** (i.e., \"converts\") the elements of `numbers` as objects of type `int` with the [int()](https://docs.python.org/3/library/functions.html#int) built-in first before filtering and averaging them. In doing so, it introduces an *internal* variable `nums` whose name collides with the one in the global scope. The **inequality operator** `!=` is just the **reversed** version of `==`."
]
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@ -658,7 +658,7 @@
" float: average\n",
" \"\"\"\n",
" nums = [int(n) for n in numbers] # cast all numbers as integers first\n",
" odds = [n for n in nums if n % 2 != 0] # before filtering them\n",
" odds = [n for n in nums if n % 2 != 0] # before filtering for odd numbers\n",
" average = sum(odds) / len(odds)\n",
" return average"
]
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