python中的any()
any()源码:
def any(*args, **kwargs): # real signature unknown """ Return True if bool(x) is True for any x in the iterable. If the iterable is empty, return False. """ pass
any() 函数将一个可迭代对象作为参数,只要该可迭代对象中至少有一项为 True,就返回 True。如果列表中所有元素都为False,则返回False;否则有一个为Ture,就返回True
语法结构:
any(iterable)
- 对于迭代中的任何 x,如果 bool(x) 是 True,返回 True
- 如果迭代是空,返回 False
示例代码:
list_1 = [0, 0, 0, 1, 0, 0, 0, 0] # any(a list with at least one non-zero entry) returns True print(any(list_1)) # Output True list_2 = [0j, 0, 0, 0.0, 0, 0, 0.0, 0] # any(a list of zeros) returns False print(any(list_2)) # Output False list_3 = [True, False, False] # any(a list with at least one True value) returns True print(any(list_3)) # Output True list_4 = ["", "", "code more"] # any(a list with at least one non-empty string) returns True print(any(list_4)) # Output True list_5 = ["", "", ""] # any(a list of empty strings) returns False print(any(list_5)) # Output False
运行结果:
使用any() 函数检查字符串中的数字
s = "dsag123" lst = [a.isdigit() for a in s] print(any(lst)
运行结果:
使用any()函数将多个条件与逻辑 OR 组合在一起
示例代码:
a, b, c, d = False, False, True, False if a or b or c or d: print(True) else: print(False) # 将a, b, c, d放到一个可迭代对象中,如列表list lst = [a, b, c, d] # 使用any() if any(lst): print(True) else: print(False)
运行结果:
转载自:https://blog.csdn.net/weixin_44799217/article/details/127378570