files.py

importos

PLOTLY_DIR=os.environ.get(
"PLOTLY_DIR", os.path.join(os.path.expanduser("~"), ".plotly")
)
TEST_FILE=os.path.join(PLOTLY_DIR, ".permission_test")


def_permissions():
try:
ifnotos.path.exists(PLOTLY_DIR):
try:
os.mkdir(PLOTLY_DIR)
exceptException:
# in case of race
ifnotos.path.isdir(PLOTLY_DIR):
raise
withopen(TEST_FILE, "w") asf:
f.write("testing\n")
try:
os.remove(TEST_FILE)
exceptException:
pass
returnTrue
exceptException: # Do not trap KeyboardInterrupt.
returnFalse


_file_permissions=None


defensure_writable_plotly_dir():
# Cache permissions status
global_file_permissions
if_file_permissionsisNone:
_file_permissions=_permissions()
return_file_permissions