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Executing periodic actions in Python [duplicate]
...unlike several of the solutions I've tried from stack exchange).
Note: for Python 2.x, replace next(g) below with g.next().
import time
def do_every(period,f,*args):
def g_tick():
t = time.time()
while True:
t += period
yield max(t - time.time(),0)
g ...
How to sort Counter by value? - python
... than doing list comprehensions of reversed list comprehension, is there a pythonic way to sort Counter by value? If so, it is faster than this:
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How to pretty print nested dictionaries?
How can I pretty print a dictionary with depth of ~4 in Python? I tried pretty printing with pprint() , but it did not work:
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Drop all duplicate rows across multiple columns in Python Pandas
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Split string using a newline delimiter with Python
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Removing numbers from string [closed]
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In Python 2.7 and above, you don't need the brackets around the list comprehension. You can leave them out and it becomes a generator expression.
– Kirk Strauser
Oct 12 '12 at 3:38
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Get protocol + host name from URL
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You should be able to do it with urlparse (docs: python2, python3):
from urllib.parse import urlparse
# from urlparse import urlparse # Python 2
parsed_uri = urlparse('http://stackoverflow.com/questions/1234567/blah-blah-blah-blah' )
result = '{uri.scheme}://{uri.netloc}/...
python generator “send” function purpose?
Can someone give me an example of why the "send" function associated with Python generator function exists? I fully understand the yield function. However, the send function is confusing to me. The documentation on this method is convoluted:
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Python using enumerate inside list comprehension
...appears the list comprehension's faster, not to mention more readable.
~$ python -mtimeit -s"mylist = ['a','b','c','d']" "list(enumerate(mylist))"
1000000 loops, best of 3: 1.61 usec per loop
~$ python -mtimeit -s"mylist = ['a','b','c','d']" "[(i, j) for i, j in enumerate(mylist)]"
1000000 loops, b...
Rank items in an array using Python/NumPy, without sorting array twice
...array that represents the rank of each item in the first array. I'm using Python and NumPy.
11 Answers
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