TypeError: unsupported operand type(s) for /: 'list' and 'int'

Question

I got the below error:

unsupported operand type(s) for /: 'list' and 'int'

How do I solve this problem? Any idea?

Here is my code:

def func(xdata_1,cc,dd,gg):
    return cc*(xdata_1**(dd))*
           (10**(-1.572*gg*( (185/((xdata_1/420)**2 + (420/xdata_1)**2 + 90 )) )

params,pcov = curve_fit(func,xdata_1,ydata_1,
                        sigma=err_1, absolute_sigma=True)

fc_1 = func(xdata_1, *params)

Answer 1

Check data type of all variable ie xdata_1 , cc , dd , gg

1. How to check type of variable :

Use 'type` inbuilt function to get type of variable.

Demo :

>>> d
[1, 2, 3]
>>> type(d)
<type 'list'>
>>> 

2. About Exception :

This exception come when we operate / operation on list and int variables.

Demo :

>>> d = [1,2,3]
>>> d/4
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unsupported operand type(s) for /: 'list' and 'int'
>>> 

3. Give input :

Best to provide input details in the question ie value of xdata_1 and params , so we can give you where code is wrong.