问题描述
我是 python 新手,我试图从 Mrjob 的文本文件中获取每一行的第一个字母,下面是我的代码:
def mapper(self,key,value):
numCharacters = len(value.strip().replace(" ",""))
numWords = len(value.strip().split())
for word in value.strip().split():
yield value[0],(numCharacters,numWords)
text.txt 文件是:
I want to Remove all white spaces.
new lines and tabs.
not the whitespace.
当我执行: python text.py text.txt 时, 返回的首字母是空格,不是首字母
" " 4.0
" " 4.0
" " 4.0
" " 4.0
" " 4.0
" " 4.0
" " 4.0
" " 4.0
" " 4.0
" " 4.0
" " 4.0
" " 5.67
" " 5.67
" " 5.67
这种支持是:
"I" 4.0
"I" 4.0
"I" 4.0
"I" 4.0
"I" 4.0
"I" 4.0
"I" 4.0
"n" 4.0
"n" 4.0
"n" 4.0
"n" 4.0
"n" 5.67
"n" 5.67
"n" 5.67
我的代码有什么问题?请帮我脱光。谢谢
解决方法
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