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List directory tree structure in python?
...hank you. Though most would know, still for the benefit of newcomers into python - please note that you would need to call the function at the end (assuming windows), so you might add a new line at the end with the content list_files ("D:\\")
– Rahul
Mar 16 '1...
Getting number of elements in an iterator in Python
Is there an efficient way to know how many elements are in an iterator in Python, in general, without iterating through each and counting?
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Add a new item to a dictionary in Python [duplicate]
I want to add an item to an existing dictionary in Python. For example, this is my dictionary:
3 Answers
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In Python, when to use a Dictionary, List or Set?
..., if for some weird reason you couldn't import collections, or, in pre-2.7 Python as a collections.defaultdict(int), using the items as keys and the associated value as the count).
Checking for membership of a value in a set (or dict, for keys) is blazingly fast (taking about a constant, short time...
Check if something is (not) in a list in Python
I have a list of tuples in Python , and I have a conditional where I want to take the branch ONLY if the tuple is not in the list (if it is in the list, then I don't want to take the if branch)
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How to profile a bash shell script slow startup?
...612534018 + set +x
Using trap debug and /proc/timer_list on recent GNU/Linux kernels, without forks.
Under GNU/Linux's recent kernels, you may find a /proc file named timer_list:
grep 'now at\|offset' /proc/timer_list
now at 5461935212966259 nsecs
.offset: 0 nsecs
.offset: 13837188...
Typing Enter/Return key using Python and Selenium?
...ment is for Java, for other languages it is maybe a different, for example python: from selenium.webdriver.common.keys import Keys
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How do I find the time difference between two datetime objects in python?
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Reference: docs.python.org/library/datetime.html#datetime-objects. Read "supported operations".
– S.Lott
Aug 28 '09 at 10:08
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R: rJava package install failing
... Nothing worked for me. I am trying to install "rJava" in the Red Hat Linux server where I am serving some R Shiny applications. I am getting the following ERROR: configuration failed for package ‘rJava’ * removing ‘/usr/lib64/R/library/rJava’. I have done the following steps in the pro...
Representing graphs (data structure) in Python
How can one neatly represent a graph in Python ? (Starting from scratch i.e. no libraries!) What data structure (e.g. dicts/tuples/dict(tuples)) will be fast but also memory efficient? One must be able to do various graph operations on it.
As pointed out, the various graph representations...