python pandas: apply a function with arguments to a series. Update

Question

I would like to apply a function with argument to a pandas series: I have found two different solution of SO:

python pandas: apply a function with arguments to a ser

Answer 1

The TypeError is saying that you passed the wrong type to the lambda function x + y. It's expecting the args to be a sequence, but it got an int. You may have thought that (100) was a tuple (a sequence), but in python it's the comma that makes a tuple:

In [10]: type((100))
Out[10]: int

In [11]: type((100,))
Out[11]: tuple

So change your last line to

In [12]: a['x'].apply(lambda x, y: x + y, args=(100,))
Out[12]: 
0    101
1    102
Name: x, dtype: int64