始终在我的代码第102行出错

Question

所以我正在创建一个模块,我将它导入到python shell并运行一些东西以确保所有功能都能正常工作等等.

出于某种原因,每次运行代码时,都会出现以下错误:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/ryansaxe/Desktop/Code/python/modules/pymaps.py", line 102, in url_maker
    #anything can be here
AttributeError: type object 'datetime.datetime' has no attribute 'datetime'

所以,在#anything can be here我的代码的第102行是什么.最初的102行是:

if isinstance(startindex,datetime.datetime):

我得到了上面的错误.我在第102行打了一个快速打印声明来检查并给出了同样的错误:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/ryansaxe/Desktop/Code/python/modules/pymaps.py", line 102, in url_maker
    print 'Hello'
AttributeError: type object 'datetime.datetime' has no attribute 'datetime'

这是某种错误吗？为什么告诉我线上的日期时间有错误print 'Hello'？

因为它可能会有所帮助,所以我会告诉你我遇到麻烦的功能,因为我不知道这是怎么回事.我保持这print 'Hello'条线,所以你可以看到第102行的位置:

def url_maker(latitudes,longitudes,times=None,color='red',label=' ',zoom=12,center=None,start=None,end=None,by=None,size='600x300'):
    urls = []   
    import datetime
    if isinstance(times[0],str) or isinstance(times[0],datetime.datetime):
        from dateutil import parser
        if isinstance(times[0],str):
            times = [parser.parse(x) for x in times]
        if isinstance(start,str):
            startindex = parser.parse(start)
        else:
            startindex = start
        if isinstance(end,str):
            endindex = parse.parse(end)
        else:
            endindex = end
        print 'Hello'
        if isinstance(startindex,datetime.datetime):
            startpos = between_times(times,startindex,by='start')
        elif isinstance(startindex,int):
            if isinstance(endindex,datetime.datetime):
                startpos = between_times(times,endindex,by='end') - start
            else:
                startpos = start
        else:
            pass
        if isinstance(endindex,datetime.datetime):
            endpos = between_times(times,endindex,by='end')
        elif isinstance(endindex,int):
            if isinstance(startindex,datetime.datetime):
                endpos = between_times(times,startindex,by='start') + end
            else:
                endpos = end
        else:
            pass
    else:
        times = range(1,len(latitudes) + 1)
        if isinstance(start,int):
            startpos = start
        else:
            startpos = None
        if isinstance(end,int):
            endpos = end
        else:
            endpos = None
    if isinstance(by,str):
        lat,lon,t = latitudes[startpos:endpos],latitudes[startpos:endpos],times[startpos:endpos]
        print lat
        t,lats,lons = time_sample(t,by,lat,lon)
    elif isinstance(by,int):
        lats,lons,t = latitudes[startpos:endpos:by],latitudes[startpos:endpos:by],times[startpos:endpos:by]
    else:
        lats,lons,t= latitudes[startpos:endpos],latitudes[startpos:endpos],times[startpos:endpos]
    print t
    print len(t)
    if center == None:
        latit = [str(i) for i in lats]
        longi = [str(i) for i in lons]
        center = '&center=' + common_finder(latit,longi)
    else:
        center = '&center=' + '+'.join(center.split())
    zoom = '&zoom=' + str(zoom)
    for i in range(len(lats)):
        #label = str(i)
        x,y = str(lats[i]),str(lons[i])
        marker = '&markers=color:' + color + '%7Clabel:' + label + '%7C' + x + ',' + y
        url = 'http://maps.googleapis.com/maps/api/staticmap?maptype=roadmap&size=' + size + zoom + center + marker + '&sensor=true'
        urls.append(url)
        #print i
    return urls,t

Answer 1

您正在使用陈旧的字节码缓存运行,或者在现有解释器中重新运行代码而不重新启动它.

回溯代码只有字节码可以使用,其中包含文件名和亚麻码信息.发生异常时,将加载源文件以检索原始代码行,但如果源文件已更改,则会导致显示错误的行.

重启解释器和/或删除所有*.pyc文件; 当解释器再次导入代码时,将重新创建后者.

至于你的具体例外; 你可能datetime从datetime某个地方的模块中导入了这个类:

from datetime import datetime

该datetime班没有一个datetime属性,只有该模块.