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How to use Python's pip to download and keep the zipped files for a package?
If I want to use the pip command to download a package (and its dependencies), but keep all of the zipped files that get downloaded (say, django-socialregistration.tar.gz) - is there a way to do that?
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How do I convert a string to a double in Python?
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Or, more specifically, Python floats are C doubles.
– habnabit
Jan 27 '09 at 5:54
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Syntax Error: Not a Chance
I tried executed the following code in the python IDLE
2 Answers
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String to Dictionary in Python
...s JSON! You can deserialize it using the built-in json module if you're on Python 2.6+, otherwise you can use the excellent third-party simplejson module.
import json # or `import simplejson as json` if on Python < 2.6
json_string = u'{ "id":"123456789", ... }'
obj = json.loads(json_string) ...
'and' (boolean) vs '&' (bitwise) - Why difference in behavior with lists vs numpy arrays?
...while & (when used with True/False values) tests if both are True.
In Python, empty built-in objects are typically treated as logically False while non-empty built-ins are logically True. This facilitates the common use case where you want to do something if a list is empty and something else i...
Python concatenate text files
...f 20 file names, like ['file1.txt', 'file2.txt', ...] . I want to write a Python script to concatenate these files into a new file. I could open each file by f = open(...) , read line by line by calling f.readline() , and write each line into that new file. It doesn't seem very "elegant" to me, e...
In Python, how do I convert all of the items in a list to floats?
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map(float, mylist) should do it.
(In Python 3, map ceases to return a list object, so if you want a new list and not just something to iterate over, you either need list(map(float, mylist) - or use SilentGhost's answer which arguably is more pythonic.)
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How exactly does the python any() function work?
In the python docs page for any , the equivalent code for the any() function is given as:
5 Answers
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Emulate a do-while loop in Python?
I need to emulate a do-while loop in a Python program. Unfortunately, the following straightforward code does not work:
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How to take the first N items from a generator or list in Python? [duplicate]
... # grab the first five elements
You can't slice a generator directly in Python. itertools.islice() will wrap an object in a new slicing generator using the syntax itertools.islice(generator, start, stop, step)
Remember, slicing a generator will exhaust it partially. If you want to keep the entire...