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  for i in range(1, 11):     print(i)     if i%3 == 0:         print("break之前的代码")         break         print("break之后的代码")
  print() for i in range(1, 4):     for j in range(1, 3):         if j == 2:             break         print(f"i={i}, j={j}")
 
  print('ok')
 
 
  n = 77
  b = True for i in range(2, n//2+1):     if n%i == 0:         print("是合数")         b = False         break if b:     print("是素数")
 
 
 
  n = 17 for i in range(2, n):     if n%i == 0:         print(n, "是合数")         break   else:     print(n, "是素数")
 
  n = 17 i = 2 while i < n:     if n%i == 0:         print(n, "是合数")         break     i += 1 else:     print(n, "是素数")
 
 
 
  for i in range(1, 11):               
      if i == 3:         pass       else:         print(i)
 
 
 
 
 
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