1.變量前怎麼加r,要在變量前加r,只需:r''+變量
imageB = r''+path
2.cv2不支持中文路徑,使用此方法創建cv2對象
def cv_imread(file_path):
cv_img = cv2.imdecode(np.fromfile(file_path,dtype=np.uint8),-1)
return cv_img
3.獲取文件的後綴名或前綴名
import os
file = "Hello.py"
# 獲取前綴(文件名稱)
assert os.path.splitext(file)[0] == "Hello"
# 獲取後綴(文件類型)
assert os.path.splitext(file)[-1] == ".py"
assert os.path.splitext(file)[-1][1:] == "py"
4.刪除數組中重複的結果
def removeDuplicates(nums):
"""
:type nums: List[int]
:rtype: int
"""
forth = 0
back = 1
while back <= len(nums)-1:
if nums[forth] == nums[back]:
nums.pop(back)
else:
forth += 1
back += 1
return len(nums)
a = [1,1,2,2,2,3,3,4,4,4,4,1,1,1]
結果:
[1, 2, 3, 4, 1]