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learn-python3/notebooks/beginner/exercises/debugging_exercise.ipynb
Jerry Pussinen 46450175dc Initial commit
2018-05-01 13:59:37 +02:00

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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# 1. Identifying bugs in code\n",
"The following `stripped_reversed_lowercase` function contains at least one bug. You can see this by running the code in the cell below which tests the functionality of the `stripped_reversed_lowercase` function.\n",
"\n",
"Set trace at the beginning of `stripped_reversed_lowercase` and use debugger to solve the bug(s). Execute the code line by line and print variables used in the function to understand what's going wrong. "
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"def stripped_reversed_lowercase(original):\n",
" # Set a breakpoint here and start debugging\n",
" stripped = original.lstrip()\n",
" reversed = ' '.join(reversed(stripped))\n",
" reversed.lower()\n",
" return reversed"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"editable": false
},
"outputs": [],
"source": [
"# Let's verify it works\n",
"original = ' \\n Original String '\n",
"result = stripped_reversed_lowercase(original)\n",
"assert result == 'gnirts lanigiro'"
]
}
],
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"name": "python3"
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