mfbaseinfo org mfbaseinfo org prod code exc chfsec prod begin date pd.to datetime exc chfsec prod begin date exc chfsec init date pd.to datetime exc chfsec init date for i in list exc chfsec prod cod ...
2019-12-18 14:59 0 357 推荐指数：
报错： ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all(). 意思是你的数组真实值不明确，出现问题代码 ...
在使用pandas判断数据时出现错误提示： ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all(). 个人理解：这是因为，你将一个值与多个 ...
: The truth value of a Series is ambiguous. Use a.empt ...
，统一用a.any()进行或比较，或a.all()进行与比较。 ...
a.any()==0语句是判断阵列中的所有元素是否都为0，当全部为0是，返回真，当有元素不为0时，返回假 a.all()==0语句是判断阵列中是否存在为0的元素，当存在0元素时，返回真，当所有元素都不为0，返回假 ...
啊，又遇到难题了 == 想要对两个 dataframe 做自然连接 merge，连接的key 为 “userid”，但是报错：ValueError: 'userid' is both an index level and a column label, which is ambiguous. ...
When this happened, it created the file .git/refs/heads/origin/branch-name. So, I just deleted the f ...
<?php if (!empty (get_gpc('userId'))) { $userId = get_gpc('userId'); } else { $error = "ID doesn't exist"; } 报错： Fatal error: Can't use ...
