Фото: Сергей Пивоваров / РИА Новости
}If you need a literal { or } in an f-string, escape it by doubling: {{ and }}.。关于这个话题，新收录的资料提供了深入分析
We now maintain an index variable. Previously, the cursor was always at the right-end of the input, since you couldn't use arrow keys to move it left, and new input was always appended at the right-end. Now, we need to keep a separate index which is not necessarily at the end of the input, and when a user enters a character we splice it into the input in the correct location.。新收录的资料对此有专业解读
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