摘要： # 随便输入一段字符串，计算整数的个数 info = input('>>>').strip() for i in info: if i.isalpha(): info = info.replace(i, " ") l = info.split() print(len(l)) # ab互换 a = 1 b = 2 a,b = b,a print(a,b) # 循环迭代字... 阅读全文