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Build a Basic Python Iterator
How would one create an iterative function (or iterator object) in python?
10 Answers
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What are the differences between type() and isinstance()?
...of types and rejects instances of subtypes, AKA subclasses).
Normally, in Python, you want your code to support inheritance, of course (since inheritance is so handy, it would be bad to stop code using yours from using it!), so isinstance is less bad than checking identity of types because it seaml...
How can I find the current OS in Python? [duplicate]
As the title says, how can I find the current operating system in python?
5 Answers
5
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Replacing a fragment with another fragment inside activity group
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Fragments that are hard coded in XML, cannot be replaced. If you need to replace a fragment with another, you should have added them dynamically, first of all.
Note: R.id.fragment_container is a layout or container of your choice in the activity you are br...
Why Maven uses JDK 1.6 but my java -version is 1.7
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It helped me. Just add it in your pom.xml.
By default maven compiler plugin uses Java 1.5 or 1.6, you have to redefine it in your pom.xml.
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId&g...
correct way to define class variables in Python [duplicate]
I noticed that in Python, people initialize their class attributes in two different ways.
2 Answers
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Looping over a list in Python
...n(x)==3:
... print x
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[1, 2, 3]
[8, 9, 10]
or if you need more pythonic use list-comprehensions
>>> [x for x in mylist if len(x)==3]
[[1, 2, 3], [8, 9, 10]]
>>>
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Best way to replace multiple characters in a string?
...= text.replace('&', r'\&').replace('#', r'\#')
Timed like this:
python -mtimeit -s"import time_functions" "time_functions.a('abc&def#ghi')"
python -mtimeit -s"import time_functions" "time_functions.b('abc&def#ghi')"
python -mtimeit -s"import time_functions" "time_functions.c('abc&...
Why use pip over easy_install? [closed]
...u can pip install ., pip install git+https://.
pip comes with the official Python 2.7 and 3.4+ packages from python.org, and a pip bootstrap is included by default if you build from source.
The various incomplete bits of documentation on installing, using, and building packages have been replaced by...
How do you split a list into evenly sized chunks?
...2, 63, 64, 65, 66, 67, 68, 69],
[70, 71, 72, 73, 74]]
If you're using Python 2, you should use xrange() instead of range():
def chunks(lst, n):
"""Yield successive n-sized chunks from lst."""
for i in xrange(0, len(lst), n):
yield lst[i:i + n]
Also you can simply use list c...