write a Python program to remove duplicates from a list
a = [10,20,30,20,10,50,60,40,80,50,40]
dup_items = set()
uniq_items = []
for x in a:
if x not in dup_items:
uniq_items.append(x)
dup_items.add(x)
print(f'dup_items:{dup_items}')
write a Python program to flatten a shallow list
import itertools
original_list = [[2,4,3],[1,5,6], [9], [7,9,0], [1,2,3,4]]
new_merged_list = list(itertools.chain(*original_list))
print(f'merged list/flatten:{new_merged_list}')
write a Python program to create multiple list
obj = {}
for i in range(1, 11):
obj[str(i)] = []
print(f'create multiple list:{obj}')
write a Python program to merge two dictionaries
d1 = {'a': 100, 'b': 200}
d2 = {'x': 300, 'y': 200}
d = d1.copy()
d.update(d2)
print(f'merge two dictionaries:{d}')
