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How can I filter lines on load in Pandas read_csv function?
...das as pd
from time import time # not needed just for timing
try:
from StringIO import StringIO
except ImportError:
from io import StringIO
def zgrep_data(f, string):
'''grep multiple items f is filepath, string is what you are filtering for'''
grep = 'grep' # change to zgrep for ...
Is a colon `:` safe for friendly-URL use?
...ndards are conflicting. For example HTTP/1.1 RFC 2616 does not allow query string in the request URL, while HTML constructs one when submitting a form with GET method. Whichever implemented in the real world wins at the end of the day.
...
Postgresql query between date ranges
...-01]'::daterange @> login_date
this should be more efficient than the string comparison
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Why can I initialize a List like an array in C#?
...onary<TKey, TValue> takes two items:
var grades = new Dictionary<string, int>
{
{ "Suzy", 100 },
{ "David", 98 },
{ "Karen", 73 }
};
Is roughly identical to:
var temp = new Dictionary<string, int>();
temp.Add("Suzy", 100);
temp.Add("David", 98);
...
How do I insert datetime value into a SQLite database?
...
How does one order by date with such strings?
– IgorGanapolsky
Jul 30 '13 at 16:28
3
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How do you read CSS rule values with JavaScript?
I would like to return a string with all of the contents of a CSS rule, like the format you'd see in an inline style. I'd like to be able to do this without knowing what is contained in a particular rule, so I can't just pull them out by style name (like .style.width etc.)
...
JavaScript get clipboard data on paste event (Cross browser)
... cycle through the pasted content using normal dom methods, or get it as a string using innerHTML. You can then restore the previous contents of the div, and insert whatever content you like. Oh, and you have to use the same timer hack as above. I'm surprised TinyMCE doesn't do this...
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Wrapping null-returning method in Java with Option in Scala?
Suppose I have a method session.get(str: String): String but you don't know whether it will return you a string or a null, because it comes from Java.
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How to get an enum which is created in attrs.xml in code
...attribute enum - in Java you can get the numeric value you specified - the string is for use in XML files (as you show).
You could do this in your view constructor:
TypedArray a = context.getTheme().obtainStyledAttributes(
attrs,
R.styleable.IconView,
...
Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
...d.isna(), in newer versions) checks for missing values in both numeric and string/object arrays. From the documentation, it checks for:
NaN in numeric arrays, None/NaN in object arrays
Quick example:
import pandas as pd
import numpy as np
s = pd.Series(['apple', np.nan, 'banana'])
pd.isnull(s...