Passing a WindowsPath as value of TourConfig's kernels_dir causes a bad escape error
running the following code on windows:
import planetary_coverage as pc
from pathlib import Path
tc = pc.TourConfig( mk="plan",
kernels_dir=Path("C:/Users/luca_/AppData/Local/JANUS/jana/Cache/kernels/juice"),
download_kernels=True,
load_kernels=True )
produces the following error:
---------------------------------------------------------------------------
KeyError Traceback (most recent call last)
File C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.3056.0_x64__qbz5n2kfra8p0\lib\sre_parse.py:1051, in parse_template(source, state)
1050 try:
-> 1051 this = chr(ESCAPES[this][1])
1052 except KeyError:
KeyError: '\\U'
During handling of the above exception, another exception occurred:
error Traceback (most recent call last)
Cell In[44], line 4
1 import planetary_coverage as pc
2 from pathlib import Path
----> 4 tc = pc.TourConfig( mk="plan", kernels_dir=Path("C:/Users/luca_/AppData/Local/JANUS/jana/Cache/kernels/juice"),
5 download_kernels=True,
6 load_kernels=True )
File c:\Users\luca_\code\.venv\lib\site-packages\planetary_coverage\trajectory\config.py:147, in TourConfig.__init__(self, mk, kernels, spacecraft, instrument, target, version, kernels_dir, download_kernels, remote_kernels, load_kernels, default_time_step, abcorr, exclude)
144 self._add(kernels)
146 if load_kernels:
--> 147 self.load_kernels()
149 # Trajectory/Flyby default parameters
150 self.default_time_step = default_time_step
File c:\Users\luca_\code\.venv\lib\site-packages\planetary_coverage\spice\pool.py:358, in check_kernels.<locals>.wrapper(_self, *args, **kwargs)
355 if SpicePool != hash(_self):
356 log_spice_pool.info(
357 'The content of the pool changed -> the kernels will be reloaded.')
--> 358 SpicePool.add(_self.kernels, purge=True)
360 return func(_self, *args, **kwargs)
File c:\Users\luca_\code\.venv\lib\site-packages\planetary_coverage\spice\pool.py:110, in MetaSpicePool.add(cls, kernel, purge)
108 if isinstance(kernel, (tuple, list)):
109 for _kernel in kernel:
--> 110 cls.add(_kernel, purge=False)
112 elif kernel in cls:
113 raise ValueError(f'Kernel `{kernel}` is already in the pool.')
File c:\Users\luca_\code\.venv\lib\site-packages\planetary_coverage\spice\pool.py:119, in MetaSpicePool.add(cls, kernel, purge)
116 log_spice_pool.debug('Add `%s` in the SPICE pool', kernel)
118 if isinstance(kernel, MetaKernel):
--> 119 with kernel as mk:
120 # `mk` is the name of a `NamedTemporaryFile` (see `MetaKernel`)
121 sp.furnsh(mk)
123 log_spice_pool.debug('Cache metakernel original hash.')
File c:\Users\luca_\code\.venv\lib\site-packages\planetary_coverage\spice\metakernel.py:109, in MetaKernel.__enter__(self)
102 if self._tmp_mk is None:
103 self._tmp_mk = NamedTemporaryFile(
104 'w',
105 prefix=self.fname.stem + '-',
106 suffix='.tm',
107 delete=False,
108 )
--> 109 self._tmp_mk.write(self.content)
110 self._tmp_mk.seek(0)
112 return self._tmp_mk.name
File c:\Users\luca_\code\.venv\lib\site-packages\planetary_coverage\spice\metakernel.py:207, in MetaKernel.content(self)
204 if 'PATH_VALUES' not in self.data:
205 return self.__content
--> 207 return re.sub(
208 r' *PATH_VALUES\s*=\s*\(\s*[\w\'\_\-\.]+\s*\)',
209 format_data(path_values=self.data['PATH_VALUES']),
210 self.__content)
File C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.3056.0_x64__qbz5n2kfra8p0\lib\re.py:209, in sub(pattern, repl, string, count, flags)
202 def sub(pattern, repl, string, count=0, flags=0):
203 """Return the string obtained by replacing the leftmost
204 non-overlapping occurrences of the pattern in string by the
205 replacement repl. repl can be either a string or a callable;
206 if a string, backslash escapes in it are processed. If it is
207 a callable, it's passed the Match object and must return
208 a replacement string to be used."""
--> 209 return _compile(pattern, flags).sub(repl, string, count)
File C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.3056.0_x64__qbz5n2kfra8p0\lib\re.py:326, in _subx(pattern, template)
324 def _subx(pattern, template):
325 # internal: Pattern.sub/subn implementation helper
--> 326 template = _compile_repl(template, pattern)
327 if not template[0] and len(template[1]) == 1:
328 # literal replacement
329 return template[1][0]
File C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.3056.0_x64__qbz5n2kfra8p0\lib\re.py:317, in _compile_repl(repl, pattern)
314 @functools.lru_cache(_MAXCACHE)
315 def _compile_repl(repl, pattern):
316 # internal: compile replacement pattern
--> 317 return sre_parse.parse_template(repl, pattern)
File C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.3056.0_x64__qbz5n2kfra8p0\lib\sre_parse.py:1054, in parse_template(source, state)
1052 except KeyError:
1053 if c in ASCIILETTERS:
-> 1054 raise s.error('bad escape %s' % this, len(this))
1055 lappend(this)
1056 else:
error: bad escape \U at position 23suspect the key is at planetary_coverage\spice\metakernel.py:207 where
re.sub(
208 r' *PATH_VALUES\s*=\s*\(\s*[\w\'\_\-\.]+\s*\)',
209 format_data(path_values=self.data['PATH_VALUES']),
210 self.__content)might require additional escaping for python on windows, but it would require more investigation