import itertoolsarr=[True,True,False,True,False,True,False,False]data = itertools.groupby(arr)print(sum(k for k,g in data)) groupby生成的密钥: In [27]: for key,group in data: ...: print(key) ...: TrueFalseTrueFalseTrueFalse bool是int的一个子类,因为你计算的是True,所以可以直接将键...
使用itertools.groupby,然后计算每组的密钥数。 import itertoolsarr=[True,True,False,True,False,True,False,False]data = itertools.groupby(arr)print(sum(k for k,g in data)) groupby生成的密钥: In [27]: for key,group in data: ...: print(key) ...: TrueFalseTrueFalseTrueFalse bool是int的一...
实际上,一般的fold操作是一个,它可以做foreach循环能做的任何事情:map、groupBy、sort、uniq、reverse、…随便你怎么说。每个集合操作都可以实现为一个fold。 示例: 代码语言:javascript 运行 AI代码解释 module Enumerable def my_reverse inject([]) {|acc, el| [el] + acc } end # this is not exactly ...
postfix will be auto-converted to a string if it is a dict-like object. To prevent this behaviour, insert an extra item into the dictionary where the key is not a string.Additional bar_format parameters may also be defined by overriding format_dict, and the bar itself may be modified usi...
rsvpmaker_event_content_anchor Function event_js Function rsvp_url_date_query Function rsvpmaker_event_listing Function get_next_events_link Function rsvpmaker_select Function rsvpmaker_join Function rsvpmaker_groupby Function rsvpmaker_distinct Function rsvpmaker_where_schedule Function rsvpmaker_where Fu...