freeCodeCamp/curriculum/challenges/arabic/07-scientific-computing-with-python/learn-algorithm-design-by-building-a-shortest-path-algorithm/65789506b30453080f77470c.md

id, title, challengeType, dashedName

id	title	challengeType	dashedName
65789506b30453080f77470c	الخطوة 1	20	step-1

--description--

So far, you have already met different data types:

• Immutable data types, such as integers, strings, tuples, and Booleans.
• Mutable data types, such as lists, and dictionaries.

A dictionary is identified by a pair of curly braces, {}.

Start by creating a variable called copper and assign it an empty dictionary using a pair of curly braces, in the same way you would create an empty list with a pair of square brackets.

--hints--

You should have a variable called copper.

({ test: () => assert(__userGlobals.has("copper")) })

Your copper variable should have the value of an empty dictionary. Use a pair of curly braces for that.

({ test: () => assert(runPython(`
    copper == {}
  `))
})

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