从数据框的python字典创建/获取/提取多个数据框

Question

I have a python dictionary with keys as dataset names and values as the entire data frames themselves, see the dictionary dict below

[Dictionary of Dataframes ]

One way id to write all the codes manually like below:

csv = dict['csv.pkl']
csv_emp = dict['csv_emp.pkl']    
csv_emp_yr= dict['csv_emp_yr.pkl']    
emp_wf=dict['emp_wf.pkl']
emp_yr_wf=dict['emp_yr_wf.pkl']

But this will get very inefficient with more number of datasets. Any help on how to get this done over a loop?

Answer 1

Although I would not recommend this method but you can try this:

import sys
this = sys.modules[__name__] # this is now your current namespace
for key in dict.keys():
    setattr(this, key, dict[key])

Now you can check new variables made with names same as keys of dictionary.

globals() has risk as it gives you what the namespace is currently pointing to but this can change and so modifying the return from globals() is not a good idea

List can also be used like (limited usecases):

dataframes = []
for key in dict.keys():
    dataframes.append(dict[key])

Still this is your choice, both of the above methods have some limitations.