Use the type()
builtin function:
>>> i = 123
>>> type(i)
<type 'int'>
>>> type(i) is int
True
>>> i = 123.456
>>> type(i)
<type 'float'>
>>> type(i) is float
True
To check if a variable is of a given type, use isinstance
:
>>> i = 123
>>> isinstance(i, int)
True
>>> isinstance(i, (float, str, set, dict))
False
Note that Python doesn't have the same types as C/C++, which appears to be your question.
The best solution in my opinion is to use the unittest
command line interface which will add the directory to the sys.path
so you don't have to (done in the TestLoader
class).
For example for a directory structure like this:
new_project
├── antigravity.py
└── test_antigravity.py
You can just run:
$ cd new_project
$ python -m unittest test_antigravity
For a directory structure like yours:
new_project
├── antigravity
│ ├── __init__.py # make it a package
│ └── antigravity.py
└── test
├── __init__.py # also make test a package
└── test_antigravity.py
And in the test modules inside the test
package, you can import the antigravity
package and its modules as usual:
# import the package
import antigravity
# import the antigravity module
from antigravity import antigravity
# or an object inside the antigravity module
from antigravity.antigravity import my_object
Running a single test module:
To run a single test module, in this case test_antigravity.py
:
$ cd new_project
$ python -m unittest test.test_antigravity
Just reference the test module the same way you import it.
Running a single test case or test method:
Also you can run a single TestCase
or a single test method:
$ python -m unittest test.test_antigravity.GravityTestCase
$ python -m unittest test.test_antigravity.GravityTestCase.test_method
Running all tests:
You can also use test discovery which will discover and run all the tests for you, they must be modules or packages named test*.py
(can be changed with the -p, --pattern
flag):
$ cd new_project
$ python -m unittest discover
$ # Also works without discover for Python 3
$ # as suggested by @Burrito in the comments
$ python -m unittest
This will run all the test*.py
modules inside the test
package.
Best Answer
Use the
netifaces
module. Because networking is complex, using netifaces can be a little tricky, but here's how to do what you want:This can be made a little more readable like this:
If you want IPv6 addresses, use
AF_INET6
instead ofAF_INET
. If you're wondering whynetifaces
uses lists and dictionaries all over the place, it's because a single computer can have multiple NICs, and each NIC can have multiple addresses, and each address has its own set of options.