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进入编程世界的第一课
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 显示: Command 'Instant Markdown: Open Browser' resulted in an error (command 'instantmarkdown.openBrowser' not found) 怎么才能让它显示出 预览效果 来呢?
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打开下载的作业,直接就是nteract打开的,就在里面作业了,中文输入法模式输入type(42),报错 句法错误,在这个标识符不存在的字母?! 哪里出问题了呢 File "", line 1 type(42) ^ SyntaxError: invalid character in identifier 截图一直传不上去呢
老师,我用from math import sqrt 执行以后没反应,还请您能解答下。 
a = 42 if n != 0: a = a / n --------------------------------------------------------------------------- NameError Traceback (most recent call last) in 1 a = 42 ----> 2 if n != 0:...
*while True: try: x = int(input('Please enter a number: ')) break except ValueError: print('Not a valid number. Try again...') print('Your number is:', x) Please enter a number: 7