sort list of tuples by first element python code example

Example 1: sort tuple by first element python

a = [(5,8), (3,4), (9,7)]

#sort by first element in tuple
result = sorted(a, key=lambda tup: tup[0])

#OR to do inplace sort:

a.sorted(key = lambda tup: tup[0])

# output
[(3, 4), (5, 8), (9, 7)]

Example 2: pyhon sort a list of tuples

# Python program to sort a list of tuples by the second Item 
  
# Function to sort the list of tuples by its second item 
def Sort_Tuple(tup):
    # Getting length of list of tuples
    lst = len(tup)
    for i in range(0, lst):
        for j in range(0, lst-i-1):
            if (tup[j][1] > tup[j + 1][1]):
                temp = tup[j]
                tup[j]= tup[j + 1]
                tup[j + 1]= temp
    return tup