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Python 读写文件时报错 ValueError: must have exactly one of create/read/write/append mode

must have exactly one of create/read/write/append mode
ValueError: must have exactly one of create/read/write/append mode
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infile = open(name,'rw') 
python 中文件打开操作的mode中没有“rw”


合法的mode有:
r、rb、r+、rb+、w、wb、w+、wb+、a、ab、a+、ab+
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