Fix Index operation and Series concatenation issues for Python 3.8 Correct code segments causing TypeError and AttributeError for improved compatibility with Python 3.8 Resolve incompatibility issues with Series append method and bitwise operator '|' in Python 3.8
Fix Index operation and Series concatenation issues for Python 3.8 Correct code segments causing TypeError and AttributeError for improved compatibility with Python 3.8 Resolve incompatibility issues with Series append method and bitwise operator '|' in Python 3.8