https://stackoverflow.com/questions/39111930/usr-include-boost-python-detail-wrap-python-hpp5023-fatal-error-pyconfig-h https://blog.csdn.net/weixin_37251044/article/details/79158823 boost:https://www.zh30.com/ubuntu-cmake-could-not-find-boost.html h
>>> b = 5 >>> a = 5 >>> id(a) 162334512 >>> id(b) 162334512 >>> a is b True 可以看出, python 中,变量是以内容为基准而不是像 c 中以变量名为基准,所以只要你的数字内容是5,不管你起什么名字,这个变量的 ID 是相同的,同时也就说明了 python 中一个变量可以以多个名称访问 这样的设计逻辑决定了 python 中数字类型的值是不可
import math n = 0 for a in range(1,49): for b in range(a,49): c = math.ceil(math.sqrt(a**2+b**2)) if c<50 and c**2 == a**2 + b**2: if(n%6 == 0): print("%2d,%2d,%2d"%(a,b,c),end='\t') n+=1 n = 0 for a in range(1,49): for b in range(a,49): for
英文文档: issubclass(class, classinfo) Return true if class is a subclass (direct, indirect or virtual) of classinfo. A class is considered a subclass of itself. classinfo may be a tuple of class objects, in which case every entry in classinfo will be c
英文文档: print(*objects, sep=' ', end='\n', file=sys.stdout, flush=False) Print objects to the text stream file, separated by sep and followed by end. sep, end and file, if present, must be given as keyword arguments. All non-keyword arguments are conve
def long_words(n, str): word_len = [] txt = str.split(" ") for x in txt: if len(x) > n: word_len.append(x) return word_len print(long_words(, "The quick brown fox jumps over the lazy dog"))