【发布时间】:2014-04-13 22:20:55
【问题描述】:
这些是先前定义的。
def get_service_code(service):
return str(service[0])
service_106_data = filter_routes(bus_stations, "106") #[('106', '1', '1', '43009'), ('106', '1', '2', '43179'), .... ('106', '2', '51', '43009')]
service_106 = make_service(service_106_data, "106") # ('106', [['43009', '43179',...'43009']])
print(get_service_code(service_106)) --> should return 106
bus_stations 这里是一个 txt 文件,其中包含这样的数字列表
106,1,1,43009
106,1,2,43179
.
.
.
106,2,1,03239
106,2,2,03211
.
.
.
106,2,50,43171
106,2,51,43009
那么这也是之前定义的
def get_route(service, direction):
return str(service[int(direction)][0])
print(get_route(service_106, '1'))
应该返回这个
['43009', '43179', '43189', '43619', '43629', '42319', '28109', '28189', '28019', '20109', '17189', '17179', '17169', '17159', '19049', '19039', '19029', '19019', '11199', '11189', '11401', '11239', '11229', '11219', '11209', '13029', '13019', '09149', '09159', '09169', '09179', '09048', '09038', '08138', '08057', '08069', '04179', '02049', 'E0200', '02151', '02161', '02171', '03509', '03519', '03539', '03129', '03218', '03219']
def make_service(service_data, service_code):
routes = []
curr_route = []
first = service_data[0] #('106', '1', '1', '43009')
curr_dir = first[1] # '1'
l = list(curr_dir) # ['1']
for entry in service_data:
direction = entry[1] #'1'
stop = entry[3] #'43009'
if direction == curr_dir:
curr_route.append(stop) #[43009]
else:
routes.append(curr_route) #[[]]
curr_route = [stop] #['43009']
curr_dir = direction #not '1'
l.append(list(direction)) # ['1', __]
routes.append(curr_route) #[['43009']]
#modify this code below
return (service_code,curr_route) #("106", [['43009']])
service_106 = make_service(service_106_data, "106")
print(service_106)
print(get_service_code((service_106))) # should return 106
print(service_106) 的预期输出是
('106',['1','2'],['03239', '03211', 'E0321', 'E0564', '03222', 'E0599', '03531', '03511', '03501', '02051', '02061', '04111', '04121', '08041', '08031', '08111', '08121', '09059', '09022', '09111', '09121', '09131', '09141', '13011', '13021', '11201', '11211', '11221', '11231', '11419', '11409', '11181', '11191', '19011', '19021', '19031', '19041', '17151', '17161', '17171', '17181', '20101', '28011', '28181', '28101', '42311', '43621', '43611', '43181', '43171', '43009'])
其中 ['1','2'] 假设是新添加的列表,我不仅应该能够添加 ['1','2'] 我应该也可以添加 ['A4'] / ['A2','A4'] 或其他非数字列表 我只是想在代码中添加新行并修改最后一行。
【问题讨论】:
-
你有什么问题?
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我的问题是如何将列表添加到这个元组中。例如,我如何将 '1' 放入列表中,然后将其添加到元组中?
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这个问题不是很清楚。但是,
return (service_code + (curr_route, )) #("106", [43009])怎么样 -
元组是不可变的,所以你不能向元组添加东西。您只能创建一个以列表为成员的元组。
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这应该给你一个想法:stackoverflow.com/questions/16730339/…