摘要： 昨天在stackoverflow上问了第一个问题，被鄙视了。。。说“This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form”。。。问题如下：I have a csv file with header. I need to update all values in a specific column but keep the header, and then save the file. How 阅读全文