Can anyone help me fix my put function which inserts a value into the hash table?
Right now I'm getting an output of a hash table full of None's
e.g. [None, None, None, None, None]

```
class BasicHashTable:
def __init__(self,size=7):
    self.size = size
    self.slots = [None] * self.size

def hash_function(self, key):
    return key%len(self.slots)

def rehash(self, old_pos):
    return (old_pos + 1) % self.size

def put(self, key):
    hash_value = key%len(self.slots)    
    probe_seq=[]     
    insert_pos=hash_value     
    probe_seq+=[insert_pos]     
    probes=1     
    while(self.slots[insert_pos]!=None):         
        probes+=1         
        insert_pos=(insert_pos+1)%len(self.slots)         
        probe_seq+=[insert_pos]     
        self.slots[insert_pos]=key     
    return insert_pos

```

Testing: 

```
hash_t = BasicHashTable() 
hash_t.put(3)
hash_t.put(20)
hash_t.put(10)
print(hash_t.slots)

```

Gives [None, None, None, 3, 10, None, 20]