Python's equivalent to null-conditional operator introduced in C# 6

Question

Is there an equivalent in Python to C# null-conditional operator?

System.Text.StringBuilder sb = null;
string s = sb?.ToString(); // No error

Answer 1

How about:

s = sb and sb.ToString()

The short circuited Boolean stops if sb is Falsy, else returns the next expression.

Btw, if getting None is important...

sb = ""

#we wont proceed to sb.toString, but the OR will return None here...
s = (sb or None) and sb.toString()

print s, type(s)

output:

None