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How to know/change current directory in Python shell?

... You can use the os module. >>> import os >>> os.getcwd() '/home/user' >>> os.chdir("/tmp/") >>> os.getcwd() '/tmp' But if it's about finding other modules: You can set an environment variable called PYT...
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Is REST DELETE really idempotent?

...ot all-effects or responses. If you do a DELETE http://example.com/account/123 then the effect is that account 123 is now deleted from the server. That is the one and only effect, the one and only change to the state of the server. Now lets say you do the same DELETE http://example.com/account/123 ...
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Relative paths in Python

... the file that has the script, you want to do something like this: import os dirname = os.path.dirname(__file__) filename = os.path.join(dirname, 'relative/path/to/file/you/want') This will give you the absolute path to the file you're looking for. Note that if you're using setuptools, you shoul...
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java.util.regex - importance of Pattern.compile()?

...ch is really called a lot :) public class AmountValidator { //Accept 123 - 123,456 - 123,345.34 private static final String AMOUNT_REGEX="\\d{1,3}(,\\d{3})*(\\.\\d{1,4})?|\\.\\d{1,4}"; //Compile and save the pattern private static final Pattern AMOUNT_PATTERN = Pattern.compile(AM...
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Why catch and rethrow an exception in C#?

...ple, in VB you can do Try .. Catch Ex As MyException When Ex.ErrorCode = 123 .. End Try ...which would not handle MyExceptions with different ErrorCode values. In C# prior to v6, you would have to catch and re-throw the MyException if the ErrorCode was not 123: try { ... } catch(MyExcepti...
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How can I iterate over files in a given directory?

... Original answer: import os for filename in os.listdir(directory): if filename.endswith(".asm") or filename.endswith(".py"): # print(os.path.join(directory, filename)) continue else: continue Python 3.6 version of ...
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How do I determine the current operating system with Node.js

...e returns darwin. On Windows, it returns win32 (even on 64 bit). Current possible values are: aix darwin freebsd linux openbsd sunos win32 I just set this at the top of my jakeFile: var isWin = process.platform === "win32"; ...
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How to count the number of files in a directory using Python

... os.listdir() will be slightly more efficient than using glob.glob. To test if a filename is an ordinary file (and not a directory or other entity), use os.path.isfile(): import os, os.path # simple version for working with...
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python NameError: global name '__file__' is not defined

... This error comes when you append this line os.path.join(os.path.dirname(__file__)) in python interactive shell. Python Shell doesn't detect current file path in __file__ and it's related to your filepath in which you added this line So you should write this line os...
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How to use “/” (directory separator) in both Linux and Windows in Python?

... Use os.path.join(). Example: os.path.join(pathfile,"output","log.txt"). In your code that would be: rootTree.write(os.path.join(pathfile,"output","log.txt")) ...