Python converts a string to a tuple

Question

Example:

regular_string = "%s %s" % ("foo", "bar")

result = {}
result["somekey"] = regular_string,

print result["somekey"]
# ('foo bar',)

Why is result["somekey"]tuple now not a string?

Answer 1

Because of the comma at the end of the line.

Answer 2

When you write

result["somekey"] = regular_string,

Python reads

result["somekey"] = (regular_string,)

(x,)is the syntax of a single-element tuple. Brackets are assumed. And you really insert a tuple instead of a string.