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u'\ufeff' in Python string
...andle the encoding.
Without it, the BOM is included in the read result:
>>> f = open('file', mode='r')
>>> f.read()
'\ufefftest'
Giving the correct encoding, the BOM is omitted in the result:
>>> f = open('file', mode='r', encoding='utf-8-sig')
>>> f.read()
'...
Difference between numpy.array shape (R, 1) and (R,)
...ret the data buffer.
For example, if we create an array of 12 integers:
>>> a = numpy.arange(12)
>>> a
array([ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11])
Then a consists of a data buffer, arranged something like this:
┌────┬────┬────┬──...
What is the difference between . (dot) and $ (dollar sign)?
...
map ($3) is a function of type Num a => [(a->b)] -> [b]. It takes a list of functions taking a number, applies 3 to all of them and collects the results.
– Cubic
Feb 28 '14 at 15:06
...
Eclipse doesn't highlight references anymore
...ces window, the feature you mean is configured by navigating to:
Window -> Preferences -> Java -> Editor -> Mark Occurrences
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Get the Last Inserted Id Using Laravel Eloquent
...
After save, $data->id should be the last id inserted.
$data->save();
$data->id;
Can be used like this.
return Response::json(array('success' => true, 'last_insert_id' => $data->id), 200);
For updated laravel version tr...
In CoffeeScript how do you append a value to an Array?
...
I was expecting x << 'a' to work.
– Chloe
Sep 13 '18 at 18:44
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Convert python datetime to epoch with strftime
...ert a python datetime to seconds since epoch you could do it explicitly:
>>> (datetime.datetime(2012,04,01,0,0) - datetime.datetime(1970,1,1)).total_seconds()
1333238400.0
In Python 3.3+ you can use timestamp() instead:
>>> datetime.datetime(2012,4,1,0,0).timestamp()
1333234800...
What rules does Pandas use to generate a view vs a copy?
...ays return a copy as its evaluated by numexpr)
An indexer that gets on a multiple-dtyped object is always a copy.
Your example of chained indexing
df[df.C <= df.B].loc[:,'B':'E']
is not guaranteed to work (and thus you shoulld never do this).
Instead do:
df.loc[df.C <= df.B, 'B':'E']
...
Python Remove last 3 characters of a string
...
>>> foo = "Bs12 3ab"
>>> foo[:-3]
'Bs12 '
>>> foo[:-3].strip()
'Bs12'
>>> foo[:-3].strip().replace(" ","")
'Bs12'
>>> foo[:-3].strip().replace(" ","").upper()
'BS12'
...
Is there a Python function to determine which quarter of the year a date is in?
...atetime commands you are already familiar with will work. Here's a demo:
>>> from fiscalyear import *
>>> a = FiscalDate.today()
>>> a
FiscalDate(2017, 5, 6)
>>> a.fiscal_year
2017
>>> a.quarter
3
>>> b = FiscalYear(2017)
>>> b.start
Fi...