解决了就好

能够理解这位用户遇到这种问题的心情啦，问题已经解决了，是由于自身的测试不当造成的，事实证明呢，AI Studio的IO速度还是相当ok的

作为第三方我说一句，您是来咨询问题，不是来兴师问罪

您好，请问您在aistudio上的项目id是多少

刚又测了一遍,kaggle上面的速度是;

(590540, 433)
(506691, 432)
CPU times: user 45.2 s, sys: 13 s, total: 58.2 s
Wall time: 55.8 s

用的代码是:

%%time
import pandas as pd
train_transaction = pd.read_csv('../input/ieee-fraud-detection/train_transaction.csv', index_col='TransactionID')
test_transaction = pd.read_csv('../input/ieee-fraud-detection/test_transaction.csv', index_col='TransactionID')

train_identity = pd.read_csv('../input/ieee-fraud-detection/train_identity.csv', index_col='TransactionID')
test_identity = pd.read_csv('../input/ieee-fraud-detection/test_identity.csv', index_col='TransactionID')

sample_submission = pd.read_csv('../input/ieee-fraud-detection/sample_submission.csv', index_col='TransactionID')

train = train_transaction.merge(train_identity, how='left', left_index=True, right_index=True)
test = test_transaction.merge(test_identity, how='left', left_index=True, right_index=True)

print(train.shape)
print(test.shape)

之所以有细微的差别是因为：

如果不使用egine=‘python’,ｃｓｖ文件就会无法读取。