Cannot assign to function call when looping through and converting excel files

See more:

Python

With this code:

xls = pd.ExcelFile('test.xlsx')
sn = xls.sheet_names
for i,snlist in list(zip(range(1,13),sn)):
    df+str(i) =  pd.read_excel('test.xlsx',sheet_name=snlist, skiprows=range(6))

I get this error:

> 'df{}'.format(str(i)) =  pd.read_excel('test.xlsx',sheet_name=snlist,
> skiprows=range(6))
>     ^ SyntaxError: cannot assign to function call

I can't understand the error and how solve. What's the problem?
df+str(i) also return error

i want to make result as:

df1 = pd.read_excel.. list1...
df2 = pd.read_excel... list2.... 

What I have tried:

xls = pd.ExcelFile('test.xlsx')
sn = xls.sheet_names
for i,snlist in list(zip(range(1,13),sn)):
    df+str(i) =  pd.read_excel('test.xlsx',sheet_name=snlist, skiprows=range(6))