num = 0 # 初始化num用于存放偶數和
for i in range(0, 1001, 1): # 利用range從0開始循環到1001，每次遞增1，循環到1001等同于i<=1000
if i % 2 != 0: # 如果i除以2的余數不為0則說明i不能被2整除，此時i的值為奇數
continue # 不能被整除則跳過當前循環
num += i # 將i的值存到num中
print(num) # 輸出num的值，也就是1000以內所有偶數的值
template = 'Life is {0},you need {1}'
result = template.format('short','python')
print(result)
template = 'Life is {s} , you need {p}'
short ='short'
python = 'python'
result = template.format(s =short , p = python)
print(result)
