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How to pass a user defined argument in scrapy spider
...hon throws a not defined error. BTW, why have you omitted the super call? PS. I'm working with the CrawlSpider class
– Birla
Sep 24 '14 at 10:57
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How to merge dictionaries of dictionaries?
... to mutate the first argument; that makes the "reduce" easier to explain]
ps in python 3, you will also need from functools import reduce
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Can I specify multiple users for myself in .gitconfig?
...opy other public key pbcopy < ~/.ssh/id_rsa_pro.pub
repeat and adapt steps 2 to 4 for every other account
Step 1. Automatic ssh key switching.
We can configure ssh to send a use a specific encryption key depending on the host. The nice thing is that you can have several aliases for the same host...
Why do people write the #!/usr/bin/env python shebang on the first line of a Python script?
...linux for example can't use the script name for the name of the process in ps and reverts to "python". When packaging python apps for distros for example I would advise not to use env.
– pixelbeat
Mar 12 '10 at 13:26
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Why are we not to throw these exceptions?
...nt, about custom exceptions: I have never felt the need to do this. Perhaps I'm missing out on something. Under what conditions would one need to craft a custom exception type in lieu of something from the framework?
– DonBoitnott
Mar 18 '14 at 11:17
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Send string to stdin
... into a program, without that input being saved in history, nor visible in ps. Just press Ctrl + C when finished typing to end cat.
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Is there a generator version of `string.split()` in Python?
... splitlines, I would suggest using this RE: '(.*\n|.+$)' str.splitlines chops off the trainling newline though (something that I don't really like...); if you wanted to replicated that part of the behavior, you could use grouping: (m.group(2) or m.group(3) for m in re.finditer('((.*)\n|(.+)$)', s))....
How to concatenate two MP4 files using FFmpeg?
...ethod with formats that support file level concatenation
(MPEG-1, MPEG-2 PS, DV). Do not use with MP4.
ffmpeg -i "concat:input1|input2" -codec copy output.mkv
This method does not work for many formats, including MP4, due to the nature of these formats and the simplistic concatenation performed...
Should IBOutlets be strong or weak under ARC?
...g should be the default and that the developer docs are being updated.
https://twitter.com/_danielhall/status/620716996326350848
https://twitter.com/_danielhall/status/620717252216623104
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How do you use Mongoose without defining a schema?
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PS: You have to do thing.set(key, value) because thing.key=value doesn't work with this method, i.e. it doesn't persist changed into the database otherwise.
– laggingreflex
Mar 18 '15 at...