大约有 40,000 项符合查询结果（耗时：0.0437秒） [XML]
What is the correct syntax for 'else if'?
...hon programmer who is making the leap from 2.6.4 to 3.1.1. Everything has gone fine until I tried to use the 'else if' statement. The interpreter gives me a syntax error after the 'if' in 'else if' for a reason I can't seem to figure out.
...
Delete column from pandas DataFrame
...1', 'Col2', ...]
df.drop(columns, inplace=True, axis=1)
This will delete one or more columns in-place. Note that inplace=True was added in pandas v0.13 and won't work on older versions. You'd have to assign the result back in that case:
df = df.drop(columns, axis=1)
...
Getting a map() to return a list in Python 3.x
...eneralizations
UPDATE
Always seeking for shorter ways, I discovered this one also works:
*map(chr, [66, 53, 0, 94]),
Unpacking works in tuples too. Note the comma at the end. This makes it a tuple of 1 element. That is, it's equivalent to (*map(chr, [66, 53, 0, 94]),)
It's shorter by only one ...
Why is my git repository so big?
...
I recently pulled the wrong remote repository into the local one (git remote add ... and git remote update). After deleting the unwanted remote ref, branches and tags I still had 1.4GB (!) of wasted space in my repository. I was only able to get rid of this by cloning it with git clo...
Favorite Visual Studio keyboard shortcuts [closed]
...son - it doesn't just cycle like most apps.
– Lucas Jones
Jul 1 '09 at 21:28
6
@Lucas Jones, It s...
Auto expand a textarea using jQuery
...
I have tried lots and
this one is great. Link is dead. Newer version is available here. See below for old version. You can try by pressing and hold enter key in textarea. Compare the effect with the other auto expanding textarea plugin....
edit based ...
jQuery set checkbox checked
...
Why not just on one single line? $( "#even_allday_yn").prop('checked', allDay);
– Xavier Hayoz
Oct 23 '14 at 14:43
...
Logging best practices [closed]
...etc) and Verbose logging simply becomes too much.
Rather than having only one switch that turns it all either on or off, it is useful to be able to turn on this information for one section of your system at a time.
This way, you can locate significant problems from the usually logging (all warning...
Ignore python multiple return value
...
One common convention is to use a "_" as a variable name for the elements of the tuple you wish to ignore. For instance:
def f():
return 1, 2, 3
_, _, x = f()
...
Application not picking up .css file (flask/python)
...
Sorry, forgot to come back to this one :) static folder was definitely the way to go
– Zack
Oct 14 '19 at 12:52
1
...