我试图导入一个500 mb的csv文件使用Pandas。当我这样做：

import pandas as pd

df = pd.read_csv ('filename.csv')
df.head()

结果是：

Traceback (most recent call last):
  File "/Users/Filename.py", line 3, in <module>
    df = pd.read_csv ('/Users/Filename.csv')
  File "/Users/venv/lib/python3.9/site-packages/pandas/util/_decorators.py", line 211, in wrapper
    return func(*args, **kwargs)
  File "/Users/venv/lib/python3.9/site-packages/pandas/util/_decorators.py", line 331, in wrapper
    return func(*args, **kwargs)
  File "/Users/venv/lib/python3.9/site-packages/pandas/io/parsers/readers.py", line 950, in read_csv
    return _read(filepath_or_buffer, kwds)
  File "/Usersvenv/lib/python3.9/site-packages/pandas/io/parsers/readers.py", line 605, in _read
    parser = TextFileReader(filepath_or_buffer, **kwds)
  File "/Users/venv/lib/python3.9/site-packages/pandas/io/parsers/readers.py", line 1442, in __init__
    self._engine = self._make_engine(f, self.engine)
  File "/Users/venv/lib/python3.9/site-packages/pandas/io/parsers/readers.py", line 1753, in _make_engine
    return mapping[engine](f, **self.options)
  File "/Users/venv/lib/python3.9/site-packages/pandas/io/parsers/c_parser_wrapper.py", line 79, in __init__
    self._reader = parsers.TextReader(src, **kwds)
  File "pandas/_libs/parsers.pyx", line 547, in pandas._libs.parsers.TextReader.__cinit__
  File "pandas/_libs/parsers.pyx", line 636, in pandas._libs.parsers.TextReader._get_header
  File "pandas/_libs/parsers.pyx", line 852, in pandas._libs.parsers.TextReader._tokenize_rows
  File "pandas/_libs/parsers.pyx", line 1965, in pandas._libs.parsers.raise_parser_error
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa5 in position 4540: invalid start byte

请您的帮助将是非常有用的！