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How to make a python, command-line program autocomplete arbitrary things NOT interpreter
...t readline
def completer(text, state):
options = [i for i in commands if i.startswith(text)]
if state < len(options):
return options[state]
else:
return None
readline.parse_and_bind("tab: complete")
readline.set_completer(completer)
The official module docs aren't ...
What is this Javascript “require”?
...b browser with a limited global context defined mostly by what came to be known as the Document Object Model (DOM) level 0 (the Netscape Navigator Javascript API).
Server-side Javascript eliminates that restriction and allows Javascript to call into various pieces of native code (like the Postgres ...
Format floats with standard json module
...e FLOAT_REPR so that EVERY representation of a float is under your control if you wish it to be; but unfortunately that's not how the json package was designed:-(.
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Django set default form values
...nts without you needing to do anything extra). Personally, I prefer to specify default values in the form definition and only use the initial=... mechanism if the desired default is a dynamic value (e.g. something entered by a user, or based on their login, geographical location, etc.)
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The most accurate way to check JS object's type?
...
The JavaScript specification gives exactly one proper way to determine the class of an object:
Object.prototype.toString.call(t);
http://bonsaiden.github.com/JavaScript-Garden/#types
...
TypeError: 'NoneType' object is not iterable in Python
... return empty list at least. This exception never helped anyone in real life other than making us insert few ugly if data is not None: kind of handling.
– nehem
Sep 1 '17 at 6:59
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Converting between datetime, Timestamp and datetime64
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Version 1.8.0 (in python 2.7.3), if it works for you it does suggest it is a bug on my system!
– Andy Hayden
Dec 4 '12 at 18:12
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How do you create nested dict in Python?
...split(',')
# check to make sure this key should be mapped.
if cols[0] not in keys:
continue
# add key to dict
d[cols[0]] = dict(
# inner keys are the header names, values are columns
(headers[idx], v) for idx, v in enumerate(cols[1:...
Which $_SERVER variables are safe?
...R_SIGNATURE'
Partly server controlled
These variables depend on the specific request the client sent, but can only take a limited number of valid values, since all invalid values should be rejected by the web server and not cause the invocation of the script to begin with. Hence they can be consi...
Cleanest way to get last item from Python iterator
... is precisely what None is for. Are you suggesting that some function-specific default value could even be correct? If the iterator doesn't actually iterate, then an out-of-band value is more meaningful than some misleading function-specific default.
– S.Lott
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