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Plotting time in Python with Matplotlib
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You must first convert your timestamps to Python datetime objects (use datetime.strptime). Then use date2num to convert the dates to matplotlib format.
Plot the dates and values using plot_date:
dates = matplotlib.dates.date2num(list_of_datetimes)
matplotlib.pyplot...
9个常用iptables配置实例 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...规则：
iptables -F
(or iptables --flush)
2.设置chain策略
对于filter table，默认的chain策略为ACCEPT，我们可以通过以下命令修改chain的策略：
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -P OUTPUT DROP
以上命令配置将接收、转发和发...
How does the @property decorator work in Python?
...> prop.__delete__(Foo())
Delete!
The Descriptor Howto includes a pure Python sample implementation of the property() type:
class Property:
"Emulate PyProperty_Type() in Objects/descrobject.c"
def __init__(self, fget=None, fset=None, fdel=None, doc=None):
self.fget = fget
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np.mean() vs np.average() in Python NumPy?
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Not the answer you're looking for? Browse other questions tagged python numpy statistics average mean or ask your own question.
What do *args and **kwargs mean? [duplicate]
...s just a convention. It’s the * and ** that do the magic.
The official Python documentation has a more in-depth look.
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Should I use multiplication or division?
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Python:
time python -c 'for i in xrange(int(1e8)): t=12341234234.234 / 2.0'
real 0m26.676s
user 0m25.154s
sys 0m0.076s
time python -c 'for i in xrange(int(1e8)): t=12341234234.234 * 0.5'
real 0m17.932s
user ...
Iterate a list with indexes in Python
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python enumerate function will be satisfied your requirements
result = list(enumerate([1,3,7,12]))
print result
output
[(0, 1), (1, 3), (2, 7),(3,12)]
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Get name of current script in Python
I'm trying to get the name of the Python script that is currently running.
17 Answers
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How to map a composite key with JPA and Hibernate?
...ll use the <composite-id ...>...</composite-id> tag in the hbm.xml mapping file. So the PurchasedTest.hbm.xml will look like:
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-ma...
Difference between spring @Controller and @RestController annotation
... I think @RestController also converts the response to JSON/XML automatically.
– arnabkaycee
Oct 21 '16 at 13:05
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