摘要：基本数据类型： 数字 int ,所有功能，都放在int 里 a1 = 123 转化字符串为数字 1 a = "123" 2 print(type(a),a) 3 b = int(a) 4 print(b) 1 age = 5 2 r = age.bit_length() 3 print(r) 字符串 阅读全文

摘要："""输出除7以外的1-9数字"""n = 0 while n < 10: if n == 7: pass else: print(n) n = n + 1 print(" end ") """1-100求和"""1 n = 0 2 n2 = 0 3 while n < 100: 4 n = n + 阅读全文