python版本显示为Python 2.7.14（奇怪，因为我一直都安装python 3.6及更高版本）。但是IDLE中的python shell显示Python 3.7.6。当使用f''字符串时，我收到有关此错误的通知。
此外，环境变量中的python路径也设置为python37。我想知道为什么会这样以及如何更改它。
P.S：我还没有尝试过重新安装python。
答案 0 :(得分：0)
检查环境变量是否设置为正确的Python可执行路径。
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在Linux上用where python找到活动的可执行文件。我猜您的计算机上有一个旧的可执行文件。
快乐的编码， 面包