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How to convert list to dictionary in Python?
The list is a linear data structure containing data elements.
Example
1,2,3,4,5,6
Dictionary is a data structure consisting of key: value pairs. Keys are unique and each key has some value associated with it.
Example
1:2, 3:4, 5:6
Given a list, convert this list into the dictionary, such that the odd position elements are the keys and the even position elements are the values as depicted in the above example.
Method 1 − Iterating over the list
Example
def convert(l):
dic={}
for i in range(0,len(l),2):
dic[l[i]]=l[i+1]
return dic
ar=[1,'Delhi',2,'Kolkata',3,'Bangalore',4,'Noida']
print(convert(ar))Output
{1: 'Delhi', 2: 'Kolkata', 3: 'Bangalore', 4: 'Noida'}Method 2 − Using zip()
Initialize an iterator to the variable i. After that zip together the key and values and typecast into a dictionary using dict().
Example
def convert(l): i=iter(l) dic=dict(zip(i,i)) return dic ar=[1,'Delhi',2,'Kolkata',3,'Bangalore',4,'Noida'] print(convert(ar))
Output
{1: 'Delhi', 2: 'Kolkata', 3: 'Bangalore', 4: 'Noida'}
Updated on: 11-Mar-2021
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