cannot safely convert passed user dtype of float32 for object dtyped data in column 0

利用pandas加载txt文本时,

gt = pandas.read_csv(bb_anno_file, delimiter=',', header=None, dtype=np.float32, na_filter=False, low_memory=False).values

遇到如下报错：

TypeError: Cannot cast array data from dtype('O') to dtype('float32') according to the rule 'safe'ValueError: cannot safely convert passed user dtype of float32 for object dtyped data in column 0

个人解决办法：

gt = pandas.read_csv(bb_anno_file, delimiter=',', header=None, na_filter=False, low_memory=False).valuesgt = gt.astype(np.float32)