Skillenza Common subjects, Python 3

Skillenza Common subjects

#python 3.5.2

from collections import defaultdict as dd
import operator
subjects = ['Maths 16:00 18:00','ComputerScience 12:00 13:00','Physics 12:30 14:00','Chemistry 14:00 16:30']
temp = (subjects[0].split())[1].replace(':','')
#print(int(temp))
conflict = dd(int)

sub = dd(list)

for each in subjects:
    temp = each.split()
    sub[temp[0]] .append(int(temp[1].replace(':','')))
    sub[temp[0]] .append(int(temp[2].replace(':','')))
    #sub[temp[0]] += temp[2]
    #print(int(temp[1].replace(':','')))
    conflict[temp[0]]+= 0

#print(sub)

for item in sub.items():
    for s in sub.items():
        if(item[0] != s[0] and (item[1][0]<=s[1][0]<item[1][1] or item[1][0]<s[1][1]<=item[1][1])):
            conflict[item[0]] += 1
            #print(item)
            #print(s)
            #print(s[1][0])
            #print('====')
sorted_x = sorted(conflict.items(), key=operator.itemgetter(1))
#print(sorted_x)
#print(conflict)

perma = []
perma.append(sorted_x[0][0])
for item in sorted_x[1:]:
    temp = []
    for s in perma:
        #print(sub.get(item[0])[0])
        if(sub.get(s)[0] <= sub.get(item[0])[1] or sub.get(s)[1] >= sub.get(item[0])[0]):
            #print('HI')
            #temp = 
            temp.append(item[0])
    perma.extend(temp)
print(perma)


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