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Git submodule add: “a git directory is found locally” issue

...l as rm -rf path_to_submodule, do that! Then: Delete the relevant lines from the .gitmodules file. e.g. delete these: [submodule "path_to_submodule"] path = path_to_submodule url = https://github.com/path_to_submodule Delete the relevant section from .git/config. e.g. delete these: [sub...
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Python date string to date object

...").date() but you still get the traceback above. Answer: >>> from dateutil.parser import parse >>> from datetime import datetime >>> parse("2015-02-24T13:00:00-08:00") datetime.datetime(2015, 2, 24, 13, 0, tzinfo=tzoffset(None, -28800)) ...
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What is the id( ) function used for?

... Your post asks several questions: What is the number returned from the function? It is "an integer (or long integer) which is guaranteed to be unique and constant for this object during its lifetime." (Python Standard Library - Built-in Functions) A unique number. Nothing more, and n...
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What causes and what are the differences between NoClassDefFoundError and ClassNotFoundException?

... The difference from the Java API Specifications is as follows. For ClassNotFoundException: Thrown when an application tries to load in a class through its string name using: The forName method in class Class. The findSyst...
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How to extract the year from a Python datetime object?

I would like to extract the year from the current date using Python. 4 Answers 4 ...
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Python glob multiple filetypes

... from glob import glob files = glob('*.gif') files.extend(glob('*.png')) files.extend(glob('*.jpg')) print(files) If you need to specify a path, loop over match patterns and keep the join inside the loop for simplicity: f...
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Ruby: What is the easiest way to remove the first element from an array?

Lets say I have an array 11 Answers 11 ...
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How do you Force Garbage Collection from the Shell?

...rm program. Fire it up like so: java -jar jmxterm-1.0-alpha-4-uber.jar From there, you can connect to a host and trigger GC: $>open host:jmxport #Connection to host:jmxport is opened $>bean java.lang:type=Memory #bean is set to java.lang:type=Memory $>run gc #calling operation gc of mb...
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How do I find the duplicates in a list and create another list with them?

... @watsonic: Your "simple switch" fails to reduce the time complexity from quadratic to squared in the general case. Replacing l with set(l) only reduces the worst-case time complexity and hence does nothing to address the larger-scale efficiency concerns with this answer. It probably wasn't so...
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Python dictionary from an object's fields

Do you know if there is a built-in function to build a dictionary from an arbitrary object? I'd like to do something like this: ...