# Create a box filter: boxFilter = np.ones((9, 9), np.float32) / 81.0 # Subtract the two: kernel = kernel - boxFilter index = patch_mask > 0 if confirm: self.confirm() sharp = cv2.filter2D(self.patch_bgr, -1, kernel) self.patch_bgr[index] = np.minimum( ((1-rate)*self....
import datetime defadd_days_to_date(date_obj, days_to_add): """给日期增加指定天数.""" delta = datetime.timedelta(days=days_to_add) return date_obj + delta defsubtract_days_from_date(date_obj, days_to_subtract): """给日期减少指定天数.""" delta = datetime.timedelta(days=days_to_sub...
from dataclasses import dataclass @dataclass class Vector: x: int y: int def __add__(self, other): """Add two vectors using + operator""" return Vector( self.x + other.x, self.y + other.y, ) def __sub__(self, other): """Subtract two vectors using - operator""" return ...
You can also use it to subtract two numbers: Python >>> -273.15 -273.15 >>> 5 - 2 3 In this code snippet, the minus sign (-) in the first example is a unary operator, and the number 273.15 is the operand. In the second example, the same symbol is a binary operator, and ...
1def add_or_subtract(num_1, num_2, subtract=False): 2 """Add or subtract two numbers, depending on the value of subtract.""" 3 if subtract: 4 return num_1 - num_2 5 else: 6 return num_1 + num_2 In this code, you are defining a function called add_or_subtract() that has...
(self): 310 '''Subtracts from an empty counter. Strips positive and zero counts, 311 and flips the sign on negative counts. 312 313 ''' 314 result = Counter() 315 for elem, count in self.items(): 316 if count < 0: 317 result[elem] = 0 - count 318 return result 319 320 def...
Python’s datetime module provides the timedelta class, which you can use to add or subtract a certain number of days from a date. Here’s how you can use it:from datetime import datetime, timedeltacurrent_date = datetime.now()new_date = current_date + timedelta(days=5)print(new_date)...
This indicates there is a 31 day and 3-hour difference between the two timestamps. What if we just want to get a number back indicating a given unit of time? The variable type returned when we subtract one time from another is timedelta. The timedelta object has attributes for each unit...
在Python中,object的实例是type,object是顶层类,没有基类;type的实例是type,type的基类是object。Python中的内置类型的基类是object,但是他们都是由type实例化而来,具体的值由内置类型实例化而来。在Python2.x的语法中用户自定义的类没有明确指定基类就默认是没有基类,在Python3.x的语法中,指定基类为object。
implement a difference function, which subtracts one list from another and returns the result. It should remove all values from lista, which are present in listb. defarray_diff(a, b):return [xfor xin aif xnotin b] Take 2 stringss1ands2including only letters fromatoz. Return a newsorted...