python SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: trunca
2017-11-22 13:41
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这个是笔者在通过绝对路径读取文件时出现的错误,笔者使用的命令如下
结果出现错误
通过查找问题,发现\在python中是转义字符
百科:转义字符—所有的ASCII码都可以用“\”加数字(一般是8进制数字)来表示。而C中定义了一些字母前加”\”来表示常见的那些不能显示的ASCII字符,如\0,\t,\n等,就称为转义字符,因为后面的字符,都不是它本来的ASCII字符意思了。
因此是文件中的\被当成转义字符导致的错误,两种方法修改
1)在路径前加r,r的作用是防止将\当成转义字符,而是将r之后的\都当成普通字符\
2)使用\代替\
3)使用/代替\
file = open('C:\Users\Wudl\Desktop\pi_digits1.txt','r')
结果出现错误
SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UXXXXXXXX escape
通过查找问题,发现\在python中是转义字符
百科:转义字符—所有的ASCII码都可以用“\”加数字(一般是8进制数字)来表示。而C中定义了一些字母前加”\”来表示常见的那些不能显示的ASCII字符,如\0,\t,\n等,就称为转义字符,因为后面的字符,都不是它本来的ASCII字符意思了。
因此是文件中的\被当成转义字符导致的错误,两种方法修改
1)在路径前加r,r的作用是防止将\当成转义字符,而是将r之后的\都当成普通字符\
file = open(r'C:\Users\Wudl\Desktop\pi_digits1.txt','r')
2)使用\代替\
file = open('C:\\Users\\Wudl\\Desktop\\pi_digits1.txt','r')
3)使用/代替\
file = open('C:/Users/Wudl/Desktop/pi_digits1.txt','r')
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