从python中的列表列表中提取插槽

Question

我有以下格式的列表列表，需要传递给 api。

[
    [0, 4, 0, 4, 59], [0, 5, 0, 5, 59], [0, 6, 0, 6, 59], [0, 13, 0, 13, 59],
    [0, 14, 0, 14, 59], [0, 21, 0, 21, 59], [0, 22, 0, 22, 59], 
    [1, 5, 0, 5, 59], [1, 6, 0, 6, 59], [1, 13, 0, 13, 59], [1, 14, 0, 14, 59],
    [1, 21, 0, 21, 59], [1, 22, 0, 22, 59], [2, 5, 0, 5, 59], [2, 6, 0, 6, 59], 
    [2, 13, 0, 13, 59], [2, 14, 0, 14, 59], [2, 21, 0, 21, 59], 
    [2, 22, 0, 22, 59], [3, 5, 0, 5, 59], [3, 6, 0, 6, 59], [3, 13, 0, 13, 59],
    [3, 14, 0, 14, 59], [3, 21, 0, 21, 59], [3, 22, 0, 22, 59], 
    [4, 5, 0, 5, 59], [4, 6, 0, 6, 59], [4, 13, 0, 13, 59], [4, 14, 0, 14, 59],
    [4, 21, 0, 21, 59], [4, 22, 0, 22, 59], [5, 5, 0, 5, 59], [5, 6, 0, 6, 59],
    [5, 13, 0, 13, 59], [5, 14, 0, 14, 59], [5, 21, 0, 21, 59], 
    [5, 22, 0, 22, 59], [6, 5, 0, 5, 59], [6, 6, 0, 6, 59], [6, 13, 0, 13, 59],
    [6, 14, 0, 14, 59], [6, 21, 0, 21, 59], [6, 22, 0, 22, 59] 
]

在每个列表中，第一个元素代表天，后面的元素代表从小时和分钟到小时和分钟。从上面的示例中，对于第 0 天，slot1 是 04:00 到 6:59，slot 2 是 13:00 到 14:59，slot3 是 21:00 至 22:59。

我正在尝试将列表简化如下。

[0, 04:00, 6:59, 13:00, 14:59, 21:00, 22:59]....

基本上将每天的时间段提取并组合到一个列表中，因此最终输出从第 0 天到第 6 天只有 7 个列表。

另外请注意，上述格式可能会发生变化，对于任何一天，可能只有 1 个插槽或可能没有插槽，因此插槽可能每天在 0-3 之间变化。

到目前为止，我设法加入以下时间和分钟 `

 start = float(str(from_hr) + str('.')+ str(from_min))
 end =   float(str(to_hr) + str('.')+ str(to_min))`

Answer 1

我还假设您希望： (a) 合并连续的任命（即前一个结束后立即开始的一个） (b) 以上述方式格式化这些 (c) 将这些按天分组到扁平列表中。

如果是这样，您可以使用以下方法解决此问题：

(a) 制作一个辅助函数，将您的日、小时和分钟变量转换为分钟：

def get_minute_val(day_val,hour_val,min_val):
    return (24*60*day_val)+(60*hour_val)+min_val

(b) 创建一个函数，接受两个约会，如果它们是连续的，则将它们组合为一个，如果它们不是连续的，则将它们不组合地返回

def combine_if_consec(first,second):
    #Check whether appointments are consecutive
    if( get_minute_val(first[0],first[3],first[4]) + 1 == 
        get_minute_val(second[0],second[1],second[2])):
        #If so, return list containing combined appointment
        return [[first[0],first[1],first[2],second[3],second[4]]]
    else:
        #Else return uncombined appointments
        return [first,second]

(c) 在列表中的每个约会上迭代地调用它，与最近添加的约会进行比较。对于第一次约会，我有一个稍微老套的方法。

def combine_all_appointments(app_list):
    #Add first appointment to app list
    output_list = [test[0]]

    #Loop through remaining appointments
    for next_app in app_list[1:]:
        #Remove most recent appointment to output list
        prev_app = output_list.pop()

        #Add either 2 combined appointments, or one single appointment to outputlist
        output_list += combine_if_overlap(prev_app,next_app)

    return output_list

(d) 创建一个函数来执行你想要的格式

def format_appointments(app_list):
    return [[x[0],'%d:%02d' % (x[1],x[2]),'%d:%02d' %(x[3],x[4])] for x in app_list]

(e) 和一个单独的按天分组约会，并按天平展。

def group_by_day(app_list):
    output = {}
    #Loop through appointments
    for app in app_list:
        #Create new entry if day not yet in output dict
        if app[0] not in output:
            output[app[0]] = app[1:]
        #Add appointment values to relevant day
        else:
            output[app[0]] += app[1:]
    #Flatten dictionary
    return [[k, *output[k]] for k in output]

在您的输入上进行测试：

test = [[0, 4, 0, 4, 59],[0, 5, 0, 5, 59], [0, 6, 0, 6, 59], [0, 13, 0, 13, 59], [0, 14, 0, 14, 59], [0, 21, 0, 21, 59], [0, 22, 0, 22, 59], [1, 5, 0, 5, 59], [1, 6, 0, 6, 59], [1, 13, 0, 13, 59], [1, 14, 0, 14, 59], [1, 21, 0, 21, 59], [1, 22, 0, 22, 59], [2, 5, 0, 5, 59], [2, 6, 0, 6, 59], [2, 13, 0, 13, 59], [2, 14, 0, 14, 59], [2, 21, 0, 21, 59], [2, 22, 0, 22, 59], [3, 5, 0, 5, 59], [3, 6, 0, 6, 59], [3, 13, 0, 13, 59], [3, 14, 0, 14, 59], [3, 21, 0, 21, 59], [3, 22, 0, 22, 59], [4, 5, 0, 5, 59], [4, 6, 0, 6, 59], [4, 13, 0, 13, 59], [4, 14, 0, 14, 59], [4, 21, 0, 21, 59], [4, 22, 0, 22, 59], [5, 5, 0, 5, 59], [5, 6, 0, 6, 59], [5, 13, 0, 13, 59], [5, 14, 0, 14, 59], [5, 21, 0, 21, 59], [5, 22, 0, 22, 59], [6, 5, 0, 5, 59], [6, 6, 0, 6, 59], [6, 13, 0, 13, 59], [6, 14, 0, 14, 59], [6, 21, 0, 21, 59], [6, 22, 0, 22, 59]]

app_list = combine_all_appointments(test)
formatted = format_appointments(app_list)
grouped = group_by_day(formatted)

返回

[[0, '4:00', '6:59', '13:00', '14:59', '21:00', '22:59'], [1, '5:00', '6:59', '13:00', '14:59', '21:00', '22:59'], [2, '5:00', '6:59', '13:00', '14:59', '21:00', '22:59'], [3, '5:00', '6:59', '13:00', '14:59', '21:00', '22:59'], [4, '5:00', '6:59', '13:00', '14:59', '21:00', '22:59'], [5, '5:00', '6:59', '13:00', '14:59', '21:00', '22:59'], [6, '5:00', '6:59', '13:00', '14:59', '21:00', '22:59']]

Answer 2

你可以这样做：

input = [[0, 4, 0, 5, 59],[0, 5, 0, 5, 59], [0, 6, 0, 6, 59], [0, 13, 0, 13, 59], [0, 14, 0, 14, 59], [0, 21, 0, 21, 59], [0, 22, 0, 22, 59], [1, 5, 0, 5, 59], [1, 6, 0, 6, 59], [1, 13, 0, 13, 59], [1, 14, 0, 14, 59], [1, 21, 0, 21, 59], [1, 22, 0, 22, 59], [2, 5, 0, 5, 59], [2, 6, 0, 6, 59], [2, 13, 0, 13, 59], [2, 14, 0, 14, 59], [2, 21, 0, 21, 59], [2, 22, 0, 22, 59], [3, 5, 0, 5, 59], [3, 6, 0, 6, 59], [3, 13, 0, 13, 59], [3, 14, 0, 14, 59], [3, 21, 0, 21, 59], [3, 22, 0, 22, 59], [4, 5, 0, 5, 59], [4, 6, 0, 6, 59], [4, 13, 0, 13, 59], [4, 14, 0, 14, 59], [4, 21, 0, 21, 59], [4, 22, 0, 22, 59], [5, 5, 0, 5, 59], [5, 6, 0, 6, 59], [5, 13, 0, 13, 59], [5, 14, 0, 14, 59], [5, 21, 0, 21, 59], [5, 22, 0, 22, 59], [6, 5, 0, 5, 59], [6, 6, 0, 6, 59], [6, 13, 0, 13, 59], [6, 14, 0, 14, 59], [6, 21, 0, 21, 59], [6, 22, 0, 22, 59]]

output = {}
for row in input:
    key = row[0]
    output.setdefault(key, [str(key)])
    output[key].append('%d:%02d' % (row[1], row[2]))
    output[key].append('%d:%02d' % (row[3], row[4]))

result = output.values()