https://www.cnblogs.com/sench/p/8718008.html
test_str = “".join(test_list)# test_list中元素必须为字符,
否则: test_str = "”.join([str(x) for x in test_list])
https://www.cnblogs.com/sench/p/8718008.html
test_str = “".join(test_list)# test_list中元素必须为字符,
否则: test_str = "”.join([str(x) for x in test_list])