我下面有一个列表对象，我需要为每个列表对象分配一个特定的名称，例如如果对象位于my.list中的1st位置，则为my.list，DF.1，如果对象位于10th位置，则为DF.10。非常感谢。

df1 <- data_frame(ID = paste0(LETTERS[1],1:4), valueA = seq(0.1,0.4,0.1), Category= "Apples", valueDEF = seq(0.1,0.4,0.1), valueDEF2 = seq(0.1,0.4,0.1) )
    df2 <- data_frame(ID = paste0(LETTERS[1],5:8), valueB = seq(0.1,0.4,0.1),  Category= "Apples2")
    df3 <- data_frame(ID = paste0(LETTERS[1],9:12), valueC = seq(0.1,0.4,0.1),  Category= "Apples3")
    
    my.list  <- list(df1, df2, df3);my.list 
    
    for(i in 1:length(my.list)){
      my.list[[i]] <-  paste("DF", i, sep = ".")
      #names(my.list) <- setNames(my.list , c('list1', 'list2', 'list3')) ### in forloop 
    }

预期答案

names(my.list) 
DF.1, DF.2, DF.3