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Get pandas.read_csv to read empty values as empty string instead of nan
...das library to read in some CSV data. In my data, certain columns contain strings. The string "nan" is a possible value, as is an empty string. I managed to get pandas to read "nan" as a string, but I can't figure out how to get it not to read an empty value as NaN. Here's sample data and outp...
php is null or empty?
...ote the ===.
When use ==, as you did, PHP treats NULL, false, 0, the empty string, and empty arrays as equal.
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How to remove time portion of date in C# in DateTime object only?
...bly have the date in following format in object form not in the form of string .
38 Answers
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Do browsers send “\r\n” or “\n” or does it depend on the browser?
...itted directly from a form, browser behaviour differs. IE and Opera return strings with CRLFs in; Firefox and WebKit return LF. So any form that gets submitted with JavaScript/XMLHttpRequest help is likely to come in either form.
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How do you get a timestamp in JavaScript?
... @Niklaus That's because you're concatenating it to another string. In that case, new Date().toString() is called.
– kirb
Oct 2 '13 at 11:50
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Unresolved external symbol on static class members
.../stackoverflow.com/a/11711082/55721)
If using older versions of the C++ standard, you must add the definitions to match your declarations of X and Y
unsigned char test::X;
unsigned char test::Y;
somewhere. You might want to also initialize a static member
unsigned char test::X = 4;
and again, yo...
Groovy / grails how to determine a data type?
...
To determine the class of an object simply call:
someObject.getClass()
You can abbreviate this to someObject.class in most cases. However, if you use this on a Map it will try to retrieve the value with key 'class'. Because of this, I always use getClass() even thou...
Pinging servers in Python
...ll. This avoids shell injection vulnerability in cases where your hostname string might not be validated.
import platform # For getting the operating system name
import subprocess # For executing a shell command
def ping(host):
"""
Returns True if host (str) responds to a ping request....
How can I parse a YAML file in Python
... 3.141,
1337,
'help',
u'€'
],
'a string': 'bla',
'another dict': {
'foo': 'bar',
'key': 'value',
'the answer': 42
}
}
# Write YAML file
with io.open('data.yaml', 'w', encoding='utf8') as outfile:
yaml.dump(data, outfile, ...
In Ruby how do I generate a long string of repeated text?
What is the best way to generate a long string quickly in ruby? This works, but is very slow:
2 Answers
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