I have this folder structure: application ├── app │ └── folder │ └── file.py └── app2 └── some_folder └── some_file.py How can I import a function from file.py, from within som...

How do I check whether a file exists or not, without using the try statement?

Mar 15, 2009 · I want to find out my Python installation path on Windows. For example: C:\\Python25 How can I find where Python is installed?

In Python 3, filter doesn't return a list, but a generator-like object. Finding the first occurrence If you only want the first thing that matches a condition (but you don't know what it is yet), it's …

How do I copy a file in Python?copy2(src,dst) is often more useful than copyfile(src,dst) because: it allows dst to be a directory (instead of the complete target filename), in which case the …

The python cProfile and pstats modules offer great support for measuring time elapsed in certain functions without having to add any code around the existing functions.

How can I get the value of an environment variable in Python?

@TMWP: If you're using NumPy, numpy.isnan is a superior choice, as it handles NumPy arrays. If you're not using NumPy, there's no benefit to taking a NumPy dependency and spending the …

How do I write JSON data stored in the dictionary data to a file? f = open ('data.json', 'wb') f.write (data) This gives the error: TypeError: must be string or buffer, not dict

How do I determine: the current directory (where I was in the shell when I ran the Python script), and where the Python file I am executing is?