python_koans | Python Koans - Learn Python through TDD | Learning library
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kandi X-RAY | python_koans Summary
Python Koans - Learn Python through TDD
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Top functions reviewed by kandi - BETA
- Move cursor up
- Set the cursor position
- Returns the current cursor position
- Tests if the edge case is on or off
- Power off
- Test if two dice values are equal
- Roll a random number
- Test if the generator has a value
- Yield a value from a context
- Checks whether every value is True
- Return the true value for a truth value
- Create a Koans test suite from a file
- Test if the generator has a value to be called
- Erases the current buffer
- Tests whether the TV is off
- Raises an exception if there are two positional arguments
- Test if proxy records sent to TV
- Wrap the given stream
- Test if there is two dice
- Test for the keys and values
- Test if proxies are called
- Test if TV methods have been performed
- Test if the proxy method calls methods
- Test if generator can act as coroutine
- Raises triangle errors
- Test whether dice returns between two values
python_koans Key Features
python_koans Examples and Code Snippets
Community Discussions
Trending Discussions on python_koans
QUESTION
I'm stuck passing one of the singleton tuple tests, "test_tuples_of_one_look_peculiar" from Greg Malcolm's Python Koans (https://github.com/gregmalcolm/python_koans/blob/master/python3/koans/about_tuples.py).
Specifically, the only answer I have come up with (or found on search) for
self.assertEqual(__, ("I'm a tuple",))
is tautological self-reference:
self.assertEqual(("I'm a tuple",), ("I'm a tuple",))
which leaves the learning or purpose of the test begging. Yes, x==x.
Is the answer as simple as Python Zen's, TOOWTDI, or is there another equivalence to the singleton tuple constructor, (value,)
?
ANSWER
Answered 2018-Apr-17 at 22:26This seems like an uninformative exercise because there are many ways of writing the creation of a singleton tuple. For example:
QUESTION
I'm currently going through the excellent Python koans and I can make sense of most of them with a bit of Googling but this one has me stumped (note: the __
variable is a placeholder for the answer I have to find):
ANSWER
Answered 2017-Feb-26 at 14:55(1)
is not a tuple; the parentheses are only there to disambiguate the attribute access from 1.__class__
, which the parser would interpret as a malformed floating-point literal starting with 1.
.
(1,)
is, however, a tuple. Tuples are defined by the comma, not the parentheses, which is why you can define a tuple with something like x = 1, 2
. (The exception is the empty tuple, which is ()
rather than (,)
.)
Likewise, ("Hello, world!",)
is a tuple containing one string.
As for what should replace the __
, __class__
resolves to the class object associated with the object, not a string. You would use int
and tuple
, respectively, as the class objects returned by the two uses of __class__
in your example.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install python_koans
You can use python_koans like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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