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if else in a list comprehension [duplicate]
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@shihon When 'link' in links.keys() is False, a Python list comprehension skips over the expression to add {'albums': links['link']} to the list. Your code expanded would behave the same way as [x+1 for x in l if x >= 45] in my answer above.
– arbo...
What is the difference between NaN and None?
...y opinion, to be the best decision given the state of affairs in NumPy and Python in general. The special value NaN (Not-A-Number) is used everywhere as the NA value, and there are API functions isnull and notnull which can be used across the dtypes to detect NA values.
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Thus, I have chosen t...
How to SSH to a VirtualBox guest externally through a host? [closed]
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The best way to login to a guest Linux VirtualBox VM is port forwarding. By default, you should have one interface already which is using NAT. Then go to the Network settings and click the Port Forwarding button. Add a new Rule. As the rule name, insert "ss...
How do I disable log messages from the Requests library?
By default, the Requests python library writes log messages to the console, along the lines of:
12 Answers
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0.1 float is greater than 0.1 double. I expected it to be false [duplicate]
... greater.
Here's what the double precision value gets rounded to (using a Python interpreter):
>>> "%.55f" % 0.1
'0.1000000000000000055511151231257827021181583404541015625'
And here's the single precision value:
>>> "%.55f" % numpy.float32("0.1")
'0.100000001490116119384765625...
How to get the last day of the month?
Is there a way using Python's standard library to easily determine (i.e. one function call) the last day of a given month?
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What is stdClass in PHP?
...ass is PHP's generic empty class, kind of like Object in Java or object in Python (Edit: but not actually used as universal base class; thanks @Ciaran for pointing this out).
It is useful for anonymous objects, dynamic properties, etc.
An easy way to consider the StdClass is as an alternative to ...
Compress files while reading data from STDIN
...to compress (create a compressed archive) data while reading from stdin on Linux?
3 Answers
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How do I import CSV file into a MySQL table?
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Note that in Linux, HeidiSQL works very well under Wine.
– AlejandroVD
May 23 '17 at 16:29
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How to do ssh with a timeout in a script?
...ond.
for more details about timeout, read this document：
http://man7.org/linux/man-pages/man1/timeout.1.html
or you can use the param of ssh:
ssh -o ConnectTimeout=3 user@ip
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