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How to extract numbers from a string in Python?
...would extract all the numbers contained in a string. Which is the better suited for the purpose, regular expressions or the isdigit() method?
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What is the most efficient way to loop through dataframes with pandas? [duplicate]
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The newest versions of pandas now include a built-in function for iterating over rows.
for index, row in df.iterrows():
# do some logic here
Or, if you want it faster use itertuples()
But, unutbu's suggestion to use numpy functions to avoid iterating over rows will produce the fas...
Converting datetime.date to UTC timestamp in Python
I am dealing with dates in Python and I need to convert them to UTC timestamps to be used
inside Javascript. The following code does not work:
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What's the difference between @JoinColumn and mappedBy when using a JPA @OneToMany association
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The annotation @JoinColumn indicates that this entity is the owner of the relationship (that is: the corresponding table has a column with a foreign key to the referenced table), whereas the attribute mappedBy indicates that the entity in this side is the inverse of the rela...
What does “hashable” mean in Python?
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From the Python glossary:
An object is hashable if it has a hash value which never changes during its lifetime (it needs a __hash__() method), and can be compared to other objects (it needs an __eq__() or __cmp__() method). Hashable objects which compare equal must have the s...
HTTPS setup in Amazon EC2
How do we enable HTTPS in Amazon EC2? Our site is working on HTTP.
8 Answers
8
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How to set timeout on python's socket recv method?
I need to set timeout on python's socket recv method. How to do it?
10 Answers
10
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How to get current working directory in Java?
...ss in C:\Users\Justian\Documents\ . How can I get my program to show that it's in C:\Users\Justian\Documents ?
8 Answers
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input() error - NameError: name '…' is not defined
... That is, the new input() function reads a line from sys.stdin and returns it with the trailing newline stripped. It raises EOFError if the input is terminated prematurely. To get the old behavior of input(), use eval(input())
In Python 2.7, there are two functions which can be used to accept us...
What does the thread_local mean in C++11?
I am confused with the description of thread_local in C++11. My understanding is, each thread has unique copy of local variables in a function. The global/static variables can be accessed by all the threads (possibly synchronized access using locks). And the thread_local variables are visible to...