in src/pydolphinscheduler/core/resource_plugin.py [0:0]
def get_index(self, s: str, x, n):
"""Find the subscript of the nth occurrence of the X character in the string s."""
if n <= s.count(x):
all_index = [key for key, value in enumerate(s) if value == x]
return all_index[n - 1]
else:
raise PyResPluginException("Incomplete path.")