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what does the __file__ variable mean/do?
...e “path” to the file unless the module is built-in (and thus listed in sys.builtin_module_names) in which case the attribute is not set.
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Checking if a variable is an integer
...) rescue false This will not work for "1" if you want to check if it will convert
– mc.
Feb 18 '14 at 18:15
...
Unique fields that allow nulls in Django
... return value
if value is None:
# If db has NULL, convert it to ''.
return ''
# Otherwise, just return the value.
return value
def get_prep_value(self, value):
"""
Catches value right before sending to db.
"""
...
What is the difference between Serialization and Marshaling?
...ats remote objects specially. (RFC 2713)
To "serialize" an object means to convert its state into a byte stream in such a way that the byte stream can be converted back into a copy of the object.
So, marshalling also saves the codebase of an object in the byte stream in addition to its state.
...
“Java DateFormat is not threadsafe” what does this leads to?
... return new SimpleDateFormat("yyyyMMdd");
}
};
public Date convert(String source) throws ParseException{
Date d = df.get().parse(source);
return d;
}
}
Here is a good post with more details.
shar...
How do I create a list of random numbers without duplicates?
...rt, stop = 0, start
if (step == None): step = 1
# Use a mapping to convert a standard range into the desired range.
mapping = lambda i: (i*step) + start
# Compute the number of numbers in this range.
maximum = (stop - start) // step
# Seed range with a random integer.
val...
PHP expresses two different strings to be the same [duplicate]
...string or the comparison involves
numerical strings, then each string is converted to a number and the
comparison performed numerically.
http://php.net/manual/en/language.operators.comparison.php
Attention:
What about the behavior in javascript which also has both == and ===?
The answer is ...
Git status ignore line endings / identical files / windows & linux environment / dropbox / mled
...s:
text - Changes line endings to OS native line endings.
text eol=crlf - Converts line endings to CRLF on checkout.
text eol=lf - Converts line endings to LF on checkout.
text=auto - Sensible default that leaves line handle up to Git's discretion.
Here is the content of a sample .gitattributes fi...
Can I use __init__.py to define global variables?
...once. When it is imported the second time, the module is already cached in sys.modules.
– Ferdinand Beyer
Jul 3 '14 at 8:38
...
Keep only date part when using pandas.to_datetime
...tes are all daily only.
I wonder whether there is an elegant/clever way to convert the dates to datetime.date or datetime64[D] so that, when I write the data to CSV, the dates are not appended with 00:00:00 . I know I can convert the type manually element-by-element:
...