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thomas2017
1,342 PointsPython Collection Set Math Task 2 of 2
For this exercise I understand the concept but it still doesn't let me pass. Perhaps its the syntax that I messed up on but I just can't figure what it is. Please let me know if someone can catch my mistake. Thank You
COURSES = {
"Python Basics": {"Python", "functions", "variables",
"booleans", "integers", "floats",
"arrays", "strings", "exceptions",
"conditions", "input", "loops"},
"Java Basics": {"Java", "strings", "variables",
"input", "exceptions", "integers",
"booleans", "loops"},
"PHP Basics": {"PHP", "variables", "conditions",
"integers", "floats", "strings",
"booleans", "HTML"},
"Ruby Basics": {"Ruby", "strings", "floats",
"integers", "conditions",
"functions", "input"}
}
def covers(arg):
set1 = []
for course, topics in COURSES.items():
if topics & arg:
set1.append(course)
return set1
def covers_all(special_set):
courses_list = []
for course, topics in COURSES.items():
if(topics & special_set) == special_set:
courses_list.append(course)
return courses_list
4 Answers
Logan R
22,989 PointsMaybe try refreshing your page?
I pasted in your code and it worked for part 1 and for part 2 without any changes lol.
thomas2017
1,342 PointsWell you're much faster than I am :'( I think we can also use >= to see if every element in topics is present in v. I couldn't get it to work though.
*this is from python document set >= other Test whether every element in other is in the set.
thomas2017
1,342 PointsHey thanks Logan, I must have made like 20 changes to get to this answer...
Logan R
22,989 PointsGlad to be of help! I actually just did this challenge myself like 10 minutes ago xD
thomas2017
1,342 PointsI'm curious as to how long it took you to get this problem right?
Logan R
22,989 PointsProbably about 1-2 minutes, top. But my covers_all method kind of cheats lol.
def covers(topics):
cs = []
for k, v in COURSES.items():
if v.intersection(topics):
cs.append(k)
return cs
def covers_all(topics):
cs = []
for k, v in COURSES.items():
if len(v.intersection(topics)) == len(topics):
cs.append(k)
return cs