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173 lines
3.6 KiB
173 lines
3.6 KiB
{
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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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"1. 计算日平均气温"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 1,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"13.25\n",
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"13.25\n"
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]
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}
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],
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"source": [
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"t_Day = [10, 13, 18, 12]\n",
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"#方法1：使用算术表达式\n",
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"avg = (t_Day[0] + t_Day[1] + t_Day[2] + t_Day[3]) / 4\n",
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"print(avg)\n",
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"#方法2：使用内置函数计算\n",
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"avg = sum(t_Day) / len(t_Day)\n",
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"print(avg)"
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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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"2. 计算月平均气温"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 2,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"31.677419354838708\n",
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"31.677419354838708\n"
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]
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}
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],
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"source": [
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"t_Day = [34,32,33,33,35,36,36,36,35,34,33,32,32,32,31,32,32,30,31,30,30,31,32,29,27,29,31,32,30,26,26] \n",
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"#下标访问方法\n",
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"s = 0\n",
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"n = 0\n",
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"for i in range(len(t_Day)):\n",
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" s = s + t_Day[i]\n",
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" n = n + 1\n",
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"avg = s / n \n",
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"print(avg)\n",
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"#序列迭代访问方法\n",
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"s = 0\n",
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"n = 0\n",
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"for x in t_Day:\n",
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" s = s + x \n",
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" n = n + 1 \n",
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"avg = s / n \n",
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"print(avg)"
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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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"3.使用用户自定义函数计算平均值"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 3,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"31.677419354838708\n"
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]
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}
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],
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"source": [
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"def getAvg(L):\n",
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" return sum(L) / len(L)\n",
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"avg = getAvg(t_Day)\n",
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"print(avg)"
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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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"4.读取文件中的数据到列表"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 4,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"['34\\n', '32\\n', '33\\n', '33\\n', '35\\n', '36\\n', '36\\n', '36\\n', '35\\n', '34\\n', '33\\n', '32\\n', '32\\n', '32\\n', '31\\n', '32\\n', '32\\n', '30\\n', '31\\n', '30\\n', '30\\n', '31\\n', '32\\n', '29\\n', '27\\n', '29\\n', '31\\n', '32\\n', '30\\n', '26\\n', '26']\n",
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"[34, 32, 33, 33, 35, 36, 36, 36, 35, 34, 33, 32, 32, 32, 31, 32, 32, 30, 31, 30, 30, 31, 32, 29, 27, 29, 31, 32, 30, 26, 26]\n"
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]
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}
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],
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"source": [
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"L = list(open(\"201308tq.txt\"))\n",
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"print(L)\n",
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"for i in range(len(L)):\n",
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" L[i] = int(L[i])\n",
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"print(L)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": []
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.7.3"
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},
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"toc": {
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"base_numbering": 1,
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"nav_menu": {},
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"number_sections": true,
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"sideBar": true,
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"skip_h1_title": false,
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"title_cell": "Table of Contents",
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"title_sidebar": "Contents",
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"toc_cell": false,
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"toc_position": {},
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"toc_section_display": true,
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"toc_window_display": false
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}
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},
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"nbformat": 4,
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"nbformat_minor": 2
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}
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