1. 九九乘法表
for i in range(1,10):
for j in range(1,10):
if i >= j:
print('%s*%s=%s '%(j,i,j*i),end='')
print()
2. 100以内的质数
def zhishu(x):
for i in range(2,x):
if x % i == 0:
return False
return True
for i in range(2,101):
if zhishu(i):
print(i)
3.从1加到100的结果
j =0
for i in range(1,101):
j +=i
print(j)
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