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Pass variables to Ruby script via command line
...
opts.on('-n', '--sourcename NAME', 'Source name') { |v| options[:source_name] = v }
opts.on('-h', '--sourcehost HOST', 'Source host') { |v| options[:source_host] = v }
opts.on('-p', '--sourceport PORT', 'Source port') { |v| options[:source_port] = v }
end.parse!
dest_options = YAML.load_fi...
Post-install script with Python setuptools
...from setuptools.command.install import install
from subprocess import check_call
class PreDevelopCommand(develop):
"""Pre-installation for development mode."""
def run(self):
check_call("apt-get install this-package".split())
develop.run(self)
class PreInstallCommand(insta...
Random strings in Python
...rs are not repeated. so returned string is less random. For larger strings error: 'ValueError: sample larger than population'.
– gaoithe
Apr 3 '17 at 11:35
1
...
Where do the Python unit tests go?
...
For a file module.py, the unit test should normally be called test_module.py, following Pythonic naming conventions.
There are several commonly accepted places to put test_module.py:
In the same directory as module.py.
In ../tests/test_module.py (at the same level as the code directory)....
Java: Calling a super method which calls an overridden method
... we call the method
over here...
| +----------------+
_____/ | super |
/ +----------------+
| +------------+ | bar() |
| | this | | foo() |
| +------------+ | method0() |
+-> | @method1() |...
Python Sets vs Lists
... as lists, except for their immutability.
Iterating
>>> def iter_test(iterable):
... for i in iterable:
... pass
...
>>> from timeit import timeit
>>> timeit(
... "iter_test(iterable)",
... setup="from __main__ import iter_test; iterable = set(range(1...
How to get URL of current page in PHP [duplicate]
...
$_SERVER['REQUEST_URI']
For more details on what info is available in the $_SERVER array, see the PHP manual page for it.
If you also need the query string (the bit after the ? in a URL), that part is in this variable:
$_S...
efficient circular buffer?
...1] #[10, 11, 3, 8] 3, 11
Class:
class circularlist(object):
def __init__(self, size, data = []):
"""Initialization"""
self.index = 0
self.size = size
self._data = list(data)[-size:]
def append(self, value):
"""Append an element"""
if le...
What are good uses for Python3's “Function Annotations”
...re what you make of them.
They can be used for documentation:
def kinetic_energy(mass: 'in kilograms', velocity: 'in meters per second'):
...
They can be used for pre-condition checking:
def validate(func, locals):
for var, test in func.__annotations__.items():
value = locals[v...
Python class inherits object
...ss ClassicSpam: # no base class
... pass
>>> ClassicSpam.__bases__
()
"new" style classes: they have, directly or indirectly (e.g inherit from a built-in type), object as a base class:
>>> class NewSpam(object): # directly inherit from object
... pass
>&g...