Preferably you'd use the identical features in ps2.py you labored on. Introducing other methods is allowed but be sure you include things like them in ps2.py and experiment.py in which desired. 至于内容方面，推荐信不仅需包括学生的个人信息，也要包含推荐人的一些信息比如电子邮件地址、个人电话和职称等，以方便招生处联系到推荐人、并进行下一步关于候选人的问询。除此之外，推荐信还需包括一般信... http://ps29508.shotblogs.com/a-secret-weapon-for-ps-24645072