Python 学习心得

按时间 排序 :http://blog.csdn.net/stan_pcf/article/details/51969878
关键词重要性排序 :keydict = sorted(词典名.iteritems(), key=lambda d: d[1], reverse=True) #d[0]:按key排序 d[1]:按value排序

加载json文件

json文件一定是utf8无BOM格式否则报错

def load_datas():
    basePath = path.abspath(path.dirname(__file__)) #前两句在falsk主文件中必须使用
    uploadPath = path.join(basePath, 'files/history.json')
    f = file(uploadPath)
    jsonDatas = json.load(f)

加载文件多使用with

https://www.ibm.com/developerworks/cn/opensource/os-cn-pythonwith/

with open(r'somefileName') as somefile:
    for line in somefile:
        print line
        # ...more code

python2的格式转换

http://python.jobbole.com/87145/

猜你喜欢

转载自blog.csdn.net/tron_future/article/details/79337438