大约有 42,000 项符合查询结果（耗时：0.0801秒） [XML]
bash: mkvirtualenv: command not found
...
Solution 1:
For some reason, virtualenvwrapper.sh installed in /usr/bin/virtualenvwrapper.sh, instead of under /usr/local/bin.
The following in my .bash_profile works...
source "/usr/bin/virtualenvwrapper.sh"
export WORKON_HOME="/opt/vi...
In Python how should I test if a variable is None, True or False
...ulate(open("myfile"))
except SimulationException as sim_exc:
print "error parsing stream", sim_exc
else:
if result:
print "result pass"
else:
print "result fail"
# execution continues from here, regardless of exception or not
And now you can have a much richer type of ...
Testing whether a value is odd or even
...cided to create simple isEven and isOdd function with a very simple algorithm:
22 Answers
...
Can (domain name) subdomains have an underscore “_” in it?
Can subdomains (domain names) have underscore _ in them?
11 Answers
11
...
Is there a MySQL command to convert a string to lowercase?
I have a MySQL database of keywords that are presently mixed-case. However, I want to convert them all to lowercase. Is there an easy command to do this, either using MySQL or MySQL and PHP?
...
How many bits or bytes are there in a character? [closed]
How many bits or bytes are there per "character"?
2 Answers
2
...
Why is “if not someobj:” better than “if someobj == None:” in Python?
...is not already one. Roughly, we are asking the object : are you meaningful or not ? This is done using the following algorithm :
If the object has a __nonzero__ special method (as do numeric built-ins, int and float), it calls this method. It must either return a bool value which is then directly ...
Returning a boolean from a Bash function
...bash function that check if a file has certain properties and returns true or false. Then I can use it in my scripts in the "if". But what should I return?
...
postgres default timezone
...
The time zone is a session parameter. So, you can change the timezone for the current session.
See the doc.
set timezone TO 'GMT';
Or, more closely following the SQL standard, use the SET TIME ZONE command. Notice two words for "TIME ZONE" where the code above uses a single word "timezone...
Is proprietary code legally safe on bitbucket or github? [closed]
...lm but its unclear who owns the code if you put proprietary code on github or bitbucket in a private repository.
2 Answers
...