Merge dataframes in a dictionary

You can just pass the dict direct and access the values attribute to concat:

In [233]:

d
Out[233]:
{'df1':     name         color    type
 0  Apple        Yellow   Fruit, 'df2':     name         color    type
 0  Banana       Red      Fruit, 'df3':     name         color    type
 0  Chocolate    Brown    Sweet}
In [234]:

pd.concat(d.values(), ignore_index=True)
Out[234]:
    name         color    type
0  Banana       Red      Fruit
1  Apple        Yellow   Fruit
2  Chocolate    Brown    Sweet

This assumes that you are just looking to concatenate all the dfs, if you are going to merge then you need to explain what the merge criteria is