![](/img/trans.png)
[英]Given the pandas dataframe column, how to replace elements X in a nested list with the values in dictionary if X is a key in a dictionary?
[英]How to replace an element of a nested list by the values of a dictionary, if the key matches?
我有一个清单:
lst = [[1,0],[20,0],[21,1],[22,3],[24,2]]
还有一个字典
dct = {0:"Balco",1:"Greg",2:"Palm",3:"New"}
我想用字典中匹配的值替换嵌套列表的第二个元素。
因此,预期的新列表将是:
lst = [[1,"Balco"],[20,"Balco"],[21,"Greg"],[22,"New"],[24,"Palm"]]
一个简单的for
循环应该可以工作:
for item in lst:
item[1] = dct[item[1]]
print(lst)
或者,对单行使用列表理解:
result = [[item[0], dct[item[1]]] for item in lst]
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.