Overview of Dicts and Tuples

Overview of dict and tuple¶

As we have gone through details related to list and set, now let us get an overview of dict and tuple in Python.* dict

Group of heterogeneous elements
Each element is a key value pair.
All the keys are unique in the dict.
dict can be created by enclosing elements in {}. Key Value pair in each element are separated by : – example {1: 'a', 2: 'b', 3: 'c', 4: 'd'}
Empty dict can be initialized using {} or dict().
- tuple
Group of heterogeneous elements.
We can access the elements in tuple only by positional notation (by using index)
tuple can be created by enclosing elements in () – example (1, 2, 3, 4).

In [1]:

d = {'id': 1, 'first_name': 'Scott', 'last_name': 'Tiger', 'amount': 1000.0} # dict

In [2]:

Out[2]:

{'id': 1, 'first_name': 'Scott', 'last_name': 'Tiger', 'amount': 1000.0}

In [3]:

type(d)

Out[3]:

dict

In [4]:

d = dict() # Initializing empty dict

In [5]:

Out[5]:

{}

In [6]:

d = {} # d will be of type dict

In [7]:

type(d)

Out[7]:

dict

In [8]:

t = (1, 'Scott', 'Tiger', 1000.0) # tuple

In [9]:

type(t)

Out[9]:

tuple

In [10]:

Out[10]:

(1, 'Scott', 'Tiger', 1000.0)

In [11]:

t = ()

In [12]:

Out[12]:

()

In [13]:

type(t)

Out[13]:

tuple

In [14]:

t = tuple()

In [15]:

Out[15]:

()