python 爬取天气网卫星图片

https://github.com/MrWayneLee/weather-demo

# 下载并生成文件def downloadImg(imgDate, imgURLs, pathName): a,s,f = 0,0,0 timeStart = time.time() while a < len(imgURLs):req = requests.get(imgURLs[a])imgName = str(imgURLs[a])[-13:-9]print(str('开始请求' + imgDate + ' ' + imgName + '的数据'))if req.status_code == 200: open(pathName + ’’ + os.path.basename(imgName) + ’.png’, ’wb’).write(req.content) print('数据' + imgDate + ' ' + imgName + '下载完成') s += 1 del reqelif req.status_code == 404: print('数据' + imgDate + ' ' + imgName + '不存在') f += 1a += 1 timeEnd = time.time() totalTime = round(timeEnd - timeStart, 2) print('全部数据请求完成！总耗时：',totalTime,'秒') print('共请求', a, '次；成功', s, '次；失败', f, '次')创建文件夹

def createFolder(pathName): imgName_Year = pathName[0:4] imgName_Month = pathName[4:6] imgName_Day = pathName[6:8] imgName_date = imgName_Year + ’-’ + imgName_Month + ’-’ + imgName_Day mainPath = ’F:[Wayne Lee]学习资料Python爬取图像’ newPathName = mainPath + ’’ + imgName_date realPath = newPathName + ’’ isExists = os.path.exists(newPathName) if not isExists:os.makedirs(newPathName)print('新文件夹 [' + imgName_date + '] 创建成功')return realPath else:print(pathName + '文件夹已存在')return realPath生成时间列表

def generateTime(imgUrl): timeList = [] imgUrlList = [] h,j = 0,0 while h < 24:m = 0while m < 60: timeList.append('{:0>4d}'.format(h * 100 + m)) m += 15h += 1 # print(timeList) # print(len(timeList)) while j < len(timeList):imgUrlList.append(str(imgUrl + timeList[j] + '00000.JPG'))# print(timeList[j])j += 1 return imgUrlList # print(imgUrlList) # print(len(imgUrlList))生成下载URL列表

def downloadUrl(imgDate): imgUrl = 'http://image.nmc.cn/product/' + imgDate[0:4] + '/' + imgDate[4:6] + '/' + imgDate[6:8] + '/WXBL/SEVP_NSMC_WXBL_FY4A_ETCC_ACHN_LNO_PY_' + imgDate # + '0000' +'00000.JPG' URLlist = list(generateTime(imgUrl)) return URLlist主函数

# 主函数if __name__ == ’__main__’: # imgUrl = 'http://image.nmc.cn/product/2020/04/11/WXBL/SEVP_NSMC_WXBL_FY4A_ETCC_ACHN_LNO_PY_20200411044500000.JPG' # imgUrl = 'http://image.nmc.cn/product/2020/04/11/WXBL/SEVP_NSMC_WXBL_FY4A_ETCC_ACHN_LNO_PY_20200411' # imgName = imgUrl[-21:-9] while True:print('[1]手动输入日期')print('[2]获取当天日期')print('[3]退出程序')choose = str(input('你的选择：'))if choose == '1': imgDate = str(input('请输入日期[如20200411]：')) urlList = list(downloadUrl(imgDate)) breakelif choose == '2': imgDate = time.strftime('%Y%m%d',time.localtime()) urlList = list(downloadUrl(imgDate)) breakelif choose == '3': breakelse: print('你的选择有误！请重试')

开始下载

pathName = createFolder(imgDate) # 开始下载 downloadImg(imgDate, urlList, pathName)

完整代码

import requestsimport timeimport datetimeimport os# 下载并生成文件def downloadImg(imgDate, imgURLs, pathName): a,s,f = 0,0,0 timeStart = time.time() while a < len(imgURLs):req = requests.get(imgURLs[a])imgName = str(imgURLs[a])[-13:-9]print(str('开始请求' + imgDate + ' ' + imgName + '的数据'))if req.status_code == 200: open(pathName + ’’ + os.path.basename(imgName) + ’.png’, ’wb’).write(req.content) print('数据' + imgDate + ' ' + imgName + '下载完成') s += 1 del reqelif req.status_code == 404: print('数据' + imgDate + ' ' + imgName + '不存在') f += 1a += 1 timeEnd = time.time() totalTime = round(timeEnd - timeStart, 2) print('全部数据请求完成！总耗时：',totalTime,'秒') print('共请求', a, '次；成功', s, '次；失败', f, '次')# 创建文件夹def createFolder(pathName): imgName_Year = pathName[0:4] imgName_Month = pathName[4:6] imgName_Day = pathName[6:8] imgName_date = imgName_Year + ’-’ + imgName_Month + ’-’ + imgName_Day mainPath = ’F:[Wayne Lee]学习资料Python爬取图像’ newPathName = mainPath + ’’ + imgName_date realPath = newPathName + ’’ isExists = os.path.exists(newPathName) if not isExists:os.makedirs(newPathName)print('新文件夹 [' + imgName_date + '] 创建成功')return realPath else:print(pathName + '文件夹已存在')return realPath# 生成时间列表def generateTime(imgUrl): timeList = [] imgUrlList = [] h,j = 0,0 while h < 24:m = 0while m < 60: timeList.append('{:0>4d}'.format(h * 100 + m)) m += 15h += 1 # print(timeList) # print(len(timeList)) while j < len(timeList):imgUrlList.append(str(imgUrl + timeList[j] + '00000.JPG'))# print(timeList[j])j += 1 return imgUrlList # print(imgUrlList) # print(len(imgUrlList))# 生成下载URL列表def downloadUrl(imgDate): imgUrl = 'http://image.nmc.cn/product/' + imgDate[0:4] + '/' + imgDate[4:6] + '/' + imgDate[6:8] + '/WXBL/SEVP_NSMC_WXBL_FY4A_ETCC_ACHN_LNO_PY_' + imgDate # + '0000' +'00000.JPG' URLlist = list(generateTime(imgUrl)) return URLlist# 主函数if __name__ == ’__main__’: # imgUrl = 'http://image.nmc.cn/product/2020/04/11/WXBL/SEVP_NSMC_WXBL_FY4A_ETCC_ACHN_LNO_PY_20200411044500000.JPG' # imgUrl = 'http://image.nmc.cn/product/2020/04/11/WXBL/SEVP_NSMC_WXBL_FY4A_ETCC_ACHN_LNO_PY_20200411' # imgName = imgUrl[-21:-9] while True:print('[1]手动输入日期')print('[2]获取当天日期')print('[3]退出程序')choose = str(input('你的选择：'))if choose == '1': imgDate = str(input('请输入日期[如20200411]：')) urlList = list(downloadUrl(imgDate)) breakelif choose == '2': imgDate = time.strftime('%Y%m%d',time.localtime()) urlList = list(downloadUrl(imgDate)) breakelif choose == '3': breakelse: print('你的选择有误！请重试') # 创建文件夹 pathName = createFolder(imgDate) # 开始下载 downloadImg(imgDate, urlList, pathName)爬取效果

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