Automatic expanduser for path

[BoPeng]

Our path type is derived from pathlib.Path with additional format operators, and like Path, we will have to use expanduser() to expand ~:

>>> path(os.path.expanduser('~/.bashrc')).exists()
True
>>> path('~/.bashrc').exists()
False
>>> path('~/.bashrc').expanduser().exists()
True

Since path is a SoS type and SoS automatically expand ~, I believe we should treat

path('~/.bashrc').exists()

as

path('~/.bashrc').expanduser().exists()

The problem is that we will have to redefine many functions such as exists, is_dir, is_file, ..., and it does not look right if we automatically change the string representation of input path

>>> str(path('~/.bashrc').expanduser())
'/Users/bpeng1/.bashrc'
>>> str(path('~/.bashrc'))
'~/.bashrc'

[BoPeng]

>>> file_target('~/.bashrc').exists()
True
>>> path('~/.bashrc').exists()
True
>>> paths('~/.bashrc').exists()
True

However, this makes the paths() trick no longer safe to use in case the passed string starts with ~,

[ericchansen]

How does this work now? Is there a way to automatically do this?

[BoPeng]

This is already the case. With the following code,

print(path('~/Download'))

sos run test.sos -v1

prints the expanded path.

[ericchansen]

I'm sorry, I should be in the pathlib GitHub. Thanks @BoPeng.