One of Python's features that I am not fond of is the implicit concatenation syntax. Two strings places side by side with no separator are automatically joined at runtime:
x = 'foo' 'bar' print(x) >>>'foobar'
This makes for some potentially subtle errors when creating lists and tuples:
x = [ 'a', 'b', 'c' 'd', 'e', ] print(repr(x)) >>>['a', 'b', 'cd', 'e']