Suppose I have a vector (a_1, a_2, a_3, ... , a_n)

and I want to add a number to each element of my vector using the __add__ in python class.

Such that:

a = vector(7, 4, 2)

print a + 3

will output: (10, 7, 5)

Please help. What would be my code for this problem?

Thank you so much.

Here's a simple implementation:

```
class vector(object):
def __init__(self, *args):
self.args = args
def __add__(self, other):
if not isinstance(other, int):
raise TypeError("Cannot add {} with {}".format(type(self), type(other)))
return vector(*(arg + other for arg in self.args))
def __repr__(self):
return "vector({})".format(", ".join(map(str, self.args)))
a = vector(7, 4, 2)
print a + 3 # (10, 7, 5)
```

**Output:**

```
vector(10, 7, 5)
```

I assumed your `(10, 7, 4)`

was meant to be `(10, 7, 5)`