How do I add two sets?
PythonSetPython Problem Overview
a = {'a', 'b', 'c'}
b = {'d', 'e', 'f'}
I want to add above two set values. I need output like
c = {'a', 'b', 'c', 'd', 'e', 'f'}
Python Solutions
Solution 1 - Python
All you have to do to combine them is
c = a | b
Sets are unordered sequences of unique values. a | b or a.union(b) is the union of the two sets (a new set with all values found in either set). This is a class of operation called a "set operation", which Python sets provide convenient tools for.
Solution 2 - Python
You can use .update() to combine set b into set a. Try this:
a = {'a', 'b', 'c'}
b = {'d', 'e', 'f'}
a.update(b)
print(a)
To create a new set, c you first need to .copy() the first set:
c = a.copy()
c.update(b)
print(c)
Solution 3 - Python
You can use the result of union() of a and b in c. Note: sorted() is used to print sorted output
a = {'a','b','c'}
b = {'d','e','f'}
c=a.union(b)
print(sorted(c)) #this will print a sorted list
Or simply print unsorted union of a and
print(c) #this will print set c
Solution 4 - Python
If you wanted to subtract two sets, I tested this:
A={'A1','A2','A3'}
B={'B1','B2'}
C={'C1','C2'}
D={'D1','D2','D3'}
All_Staff=A|B|C|D
All_Staff=sorted(All_Staff.difference(B))
print("All of the stuff are:",All_Staff)
Result:
All of the stuff are: ['A1', 'A2', 'A3', 'C1', 'C2', 'D1', 'D2', 'D3']