{
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"cells": [
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{
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"cell_type": "markdown",
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|
"metadata": {},
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"source": [
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"生活中编码无处不在,如身份证号、银行卡号、邮政编 码、学籍号、车牌号及条形码、二维码等,都是按照一定的规则产生的编码。"
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]
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},
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{
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"cell_type": "markdown",
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|
"metadata": {},
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"source": [
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"__下面的代码定义了十进制转化为二进制的功能,动手验证一下吧!__"
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]
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},
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{
|
|
"cell_type": "code",
|
|
"execution_count": 1,
|
|
"metadata": {},
|
|
"outputs": [
|
|
{
|
|
"name": "stdout",
|
|
"output_type": "stream",
|
|
"text": [
|
|
"请输入一个数字: 9\n"
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|
]
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},
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|
{
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|
"data": {
|
|
"text/plain": [
|
|
"'1001'"
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|
]
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|
},
|
|
"execution_count": 1,
|
|
"metadata": {},
|
|
"output_type": "execute_result"
|
|
}
|
|
],
|
|
"source": [
|
|
"def my_bin(num):\n",
|
|
" la = []\n",
|
|
" if num < 0:\n",
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" return '-' + my_bin(abs(num))\n",
|
|
" while True:\n",
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|
" num, remainder = divmod(num, 2)\n",
|
|
" la.append(str(remainder))\n",
|
|
" if num == 0:\n",
|
|
" return ''.join(la[::-1])\n",
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|
"c = input(\"请输入一个数字: \")\n",
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"my_bin(int(c))"
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|
]
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|
},
|
|
{
|
|
"cell_type": "code",
|
|
"execution_count": null,
|
|
"metadata": {},
|
|
"outputs": [],
|
|
"source": []
|
|
}
|
|
],
|
|
"metadata": {
|
|
"kernelspec": {
|
|
"display_name": "Python 3",
|
|
"language": "python",
|
|
"name": "python3"
|
|
},
|
|
"language_info": {
|
|
"codemirror_mode": {
|
|
"name": "ipython",
|
|
"version": 3
|
|
},
|
|
"file_extension": ".py",
|
|
"mimetype": "text/x-python",
|
|
"name": "python",
|
|
"nbconvert_exporter": "python",
|
|
"pygments_lexer": "ipython3",
|
|
"version": "3.7.3"
|
|
}
|
|
},
|
|
"nbformat": 4,
|
|
"nbformat_minor": 2
|
|
}
|