Python dict magic to Ruby

brackets.py

matches = dict(['()', '[]', '{}'])
print(matches)
# {'(': ')', '[': ']', '{': '}'}

brackets.rb

Hash[['()'.split('')]]
# {"("=>")"}
['()'.split('')]
# [["(", ")"]]
Hash[ [["(", ")"], ["[", "]"]] ]
# {"("=>")", "["=>"]"}

['()', '[]', '{}'].map { _1.split('') }
# [["(", ")"], ["[", "]"], ["{", "}"]]

matches = Hash[['()', '[]', '{}'].map { _1.split('') }]
# {"("=>")", "["=>"]", "{"=>"}"}
matches = ['()', '[]', '{}'].map { _1.split('') }.to_h
# {"("=>")", "["=>"]", "{"=>"}"}