dynamically create variables' names in python

[marco_ita]

Hi guys,
i want to create variables in the following way:

assign a name (e.g. var1), then add the name to the prefix of the variable:

name = 'var_1'
this_is_+name = pd.DataFrame()

the outcome i would like is having the variable renamed (on the fly) directly:

this_is_var_1 = pf.DataFrame()

the error i get is

Error:
File "<ipython-input-28-322e5421cff2>", line 4
    df+name = pd.DataFrame()
                       ^
SyntaxError: can't assign to operator

i tried many different way, including 'print' but it doesnt work and can't find any solution on the web.
Maybe i am formulating the question in the wrong way?
Thanks for your help.