python check if double in list code example
Example 1: how to check if there are duplicates in a list python
>>> your_list = ['one', 'two', 'one']
>>> len(your_list) != len(set(your_list))
True
Example 2: python check for duplicate
def checkDuplicate(user):
if len(set(user)) < len(user):
return True
return False
Example 3: find duplicates in list python
def Find_Repeated(x):
x2=sorted(x)
List_Of_Repeated=[]
for i in x2:
if x2.count(i)>1:
List_Of_Repeated.append([i,x2.count(i)])
for c in range(x2.count(i)):
for j in x2:
if i==j and x2.count(i)>1:
x2.remove(i)
List_Of_Repeated.sort()
return List_Of_Repeated
List=[1,2,3,4,4,4,5,5,5,5,5,1,1,2,2,3,7,8,6]
print(Find_Repeated(List),"\n")
print("[ Value , Times Repeated ] \n")
print("For example: [2,4] The value 2 was repeated 4 times. \n")
for i in Find_Repeated(List):
print(i)