循环

  1. # 循环语句包含了while循环和for循环
  2. i = 10
  3. while i != 0:
  4.     print(f'i = {i}')
  5.     i -= 1
  6. # i = 0 cannot be printed

累加

  2. # 高斯公式
  3. i = 0
  4. sum = 0
  5. while i <= 100:
  6.     sum = sum + i
  7.     i += 1
  8. print(sum)
  9. sum = (1 + 100) * 100 / 2
  10. print(sum)
  11. sum = i = 0
  12. while i <= 100:
  13.     if i % 2 == 0:
  14.         sum += i
  15.     i += 1
  16. print(sum)
  18. # python has no i++

break

break直接跳出当前循环

continue

continue直接跳过下面的语句，重新进行循环

九九乘法表

  1. # 九九乘法表
  2. i, j = 0, 0
  3. while i < 9:
  4.     i += 1
  5.     while j < i:
  6.         j += 1
  7.         print(f'{i} * {j} = {i*j}\t', end="")
  8.     j = 0
  9.     print(end="\n")