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Python argparse mutual exclusive group
...ke with the second set of arguments:
prog command_2 -b yyyy -c zzzz
You can also set the sub command arguments as positional.
prog command_1 xxxx
Kind of like git or svn:
git commit -am
git merge develop
Working Example
# create the top-level parser
parser = argparse.ArgumentParser(prog='P...
Why does this assert throw a format exception when comparing structures?
...1}", struct1, struct2);
... and that's what's failing. Ouch.
Indeed, we can prove this really easily by fooling the formatting to use our parameters for the expected and actual parts:
var x = "{0}";
var y = "{1}";
Assert.AreEqual<object>(x, y, "What a surprise!", "foo", "bar");
The resul...
How to properly URL encode a string in PHP?
...n urlencode and rawurlencode is that
urlencode encodes according to application/x-www-form-urlencoded (space is encoded with +) while
rawurlencode encodes according to the plain Percent-Encoding (space is encoded with %20).
...
What's the best way of structuring data on firebase?
...his excellent post on NoSQL data structures.
The main issue with hierarchical data, as opposed to RDBMS, is that it's tempting to nest data because we can. Generally, you want to normalize data to some extent (just as you would do with SQL) despite the lack of join statements and queries.
You als...
What do the different readystates in XMLHttpRequest mean, and how can I use them?
...the transfer that's a result of a redirect isn't really an "error" and you can choose to ignore logging/reporting the error if the readyState of the xhr is 0. It's a bit fragile, and your mileage may vary depending on whether logging every event/error is a "must have" or a "nice to have". If it's t...
what is the difference between ?:, ?! and ?= in regex?
...cludes the expression from the entire match while ?: just doesn't create a capturing group. So for example a(?:b) will match the "ab" in "abc", while a(?=b) will only match the "a" in "abc". a(b) would match the "ab" in "abc" and create a capture containing the "b".
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Implementing slicing in __getitem__
...
@Eric: No, because the presence of the second colon bypasses __get/set/delslice__. It's pretty subtle, though.
– user2357112 supports Monica
May 25 '17 at 1:41
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Cleanest and most Pythonic way to get tomorrow's date?
...
timedelta can handle adding days, seconds, microseconds, milliseconds, minutes, hours, or weeks.
>>> import datetime
>>> today = datetime.date.today()
>>> today
datetime.date(2009, 10, 1)
>>> today ...
Remove non-ascii character in string
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@AlexanderMills Search for an ascii table - you can see that only characters that has value from zero to 127 are valid. (0x7F is 127 in hex). This code matches all characters that are not in the ascii range and removes them.
– Zaffy
J...
WPF Application that only has a tray icon
...wbie and wonder if anyone could give me some pointers how to write an application that starts minimized to tray. The idea is that it periodically fetches an RSS Feed and creates a Toaster-Popup when there are new feeds.
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