# Set a string value
r.set('user:name', 'Alice')

# Get a string value
name = r.get('user:name')
print(name)  # b'Alice'

# Set multiple strings at once
r.mset({'user:name': 'Bob', 'user:age': '30'})

# Get multiple strings at once
values = r.mget(['user:name', 'user:age'])
print(values)  # [b'Bob', b'30']

# Increment a string value (treated as integer)
r.set('counter', '5')
r.incr('counter')
print(r.get('counter'))  # b'6'

# Append to a string
r.append('user:name', ' Smith')
print(r.get('user:name'))  # b'Bob Smith'

# Get substring (0-based indexing)
r.setrange('user:name', 0, 'Robert')
print(r.getrange('user:name', 0, 5))  # b'Robert'

# Set with expiration (in seconds)
r.setex('session:token', 3600, 'abc123')

Note: In Redis, there are no separate number types. Numbers are stored as strings and can be manipulated with special commands like INCR, DECR, etc.