just added below statements, and make elif below this line to if.

if nums[start] == nums[end] and nums[start] != target:

end -= 1

```
class Solution(object):
def search(self, nums, target):
"""
:type nums: List[int]
:type target: int
:rtype: bool
"""
if not nums:
return False
start = 0;end = len(nums)-1
while start <= end:
mid = start+(end-start)/2
if nums[mid] == target:
return True
if nums[start] == nums[end] and nums[start] != target:
end -= 1
elif nums[start] <= nums[mid]:
if nums[start] <= target <= nums[mid]:
end = mid - 1
else:
start = mid + 1
else:
if nums[mid] <= target <= nums[end]:
start = mid + 1
else:
end = mid
return False
```