命名 Pandas 数据框

Question

I'm guessing this is basic, but again I'm struggling.

I want to create a data frame from a .csv therefore I'm doing the obvious:

df = pd.read_csv(file_path)

But in this case I want to give the data frame a meaningful name so in an IPython console I can do this:

my_dataframe_name = pd.read_csv(file_path)

My problem is that within a script, my_dataframe_name is a string defined elsewhere ie

some_variable = 'my_dataframe_name'

So (eventually...) my question is how can I create the dataframe and have it named using the string held in another variable?

Best Regards,

Ben

Answer 1

one way to do it is to use the exec function:

exec('%s = pd.read_csv(file_path)' % some_variable)

I don't know if there is a better way to do it, but this should solve your problem

Answer 2

You can use globals() to create global variable

some_variable = 'my_dataframe_name'

globals()[some_variable] = pd.read_csv(file_path)

print(my_dataframe_name)

---

But I would rather keep it in dictionary

all_dfs = {}

some_variable = 'my_dataframe_name'

all_dfs[some_variable] = pd.read_csv(file_path)

print(all_dfs[some_variable])