听起来您只需要从文件开头有条件地删除BOM。您可以使用围绕文件的包装器来执行此操作，如下所示：
def remove_bom(filename):
fp = open(filename, 'rbU')
if fp.read(2) != b'\xfe\xff':
fp.seek(0, 0)
return fp
# read_table also accepts a file pointer, so we can remove the bom first
samples = pd.read_table(remove_bom('~/datafile.txt'))
print(samples['RECORDING_SESSION_LABEL'])
602392714
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