SyntaxError：python 中的语法无效

Question

I am trying to include the year to url . I get syntax is invalid. How can I include the year in my URL.

year, month, day, hour = time_point.asStrTuple()
if analysis:
    url = fileinfo['url_anl']
else:
    url = fileinfo['url_fct']

Year = year
year_month = year + month
year_month_day = year_month + day
year_month_day_hour = year_month + day + hour
url += Year + '/' year_month + '/' + year_month_day + '/' + year_month_day_hour + '/'

if analysis:
    url += fileinfo['filecode_anl']
else:
    url += fileinfo['filecode_fct']
url += year_month_day + '_'

Answer 1

It should be

url += Year + '/' + year_month + '/' + year_month_day + '/' + year_month_day_hour + '/'

You forgot + two times:

'/' year_month 
'/'year_month_day_hour 

But if you are doing string manipulation it is better to use format https://docs.python.org/3.6/library/stdtypes.html#str.format

url += '{}/{}/{}/{}/'.format(Year, year_month, year_month_day, year_month_day_hour)

Or in your case you can do this with join https://docs.python.org/3.6/library/stdtypes.html#str.join

url += '/'.join([Year, year_month, year_month_day, year_month_day_hour, ''])

Note that for join I added '' empty string to list, so that there will be ending /