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社区成员
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if name == 'main':
languages = ...
years = ...
i = 0
while i < len(years):
language = languages[i]
year = years[i]
print(language, ':', year)
i += 1
在这段代码中,i += 1 的意思是将变量i的值加1,相当于i = i + 1。在这段代码中,i被用作循环的计数器,每次循环都会将i的值加1,直到达到循环的结束条件。这样可以确保每次循环时都能访问到正确的索引位置的元素。