【python递归】7的个数求解

Question

Answer 1

def getCount(data, d):
    if len(data) < 1:
        return 0
    else:
        return (1 if data[0] == d else 0) + getCount(data[1:], d)
    
x ='23897923023957289'
y='7'
res = getCount(x,y)
print(res)