Python converts string into tuple

Question

Example:

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

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

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

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

Jiri · Accepted Answer · 2009-07-11 22:30:10Z

16

Because of comma at the end of the line.

answered Jul 11, 2009 at 22:30

Jiri

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Comments

Stefan Kanev · Accepted Answer · 2009-07-11 22:39:06Z

9

When you write

result["somekey"] = regular_string,

Python reads

result["somekey"] = (regular_string,)

(x,) is the syntax for a tuple with a single element. Parentheses are assumed. And you really end up putting a tuple, instead of a string there.

answered Jul 11, 2009 at 22:39

Stefan Kanev

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