一、对于字符串特殊字符的替换
对于字符串内，\n的处理，如何去掉
s='123,456\n'
s1=s.strip('\n')
s2=s.replace('\n','')
print(s)
print(s1)
print(s2)
执行结果
123,456 123,456 123,456
strip(),能去除字符串首尾的特殊字符；而replace没有此限制
strip()的官方解释：strip（）默认去除的是首尾的空白字符；如果给定的话，去除给定的字符；
def strip(self, *args, **kwargs): # real signature unknown
"""
Return a copy of the string with leading and trailing whitespace removed.
If chars is given and not None, remove characters in chars instead.
"""
replace()的官方解释：默认用新值替换所有的出现的字符；如果给定数量，则按数量进行替换
"""
Return a copy with all occurrences of substring old replaced by new.
count
Maximum number of occurrences to replace.
-1 (the default value) means replace all occurrences.
If the optional argument count is given, only the first count occurrences are
replaced.
"""
如：
s='123a,a456a'
#把字符串中的字符 a 替换为字符b，只替换前2个
s3=s.replace('a','b',2)
#把字符串中的字符 a 都替换为字符b，
s4=s.replace('a','b')
print(s)
print(s3)
print(s4)
执行结果：
123a,a456a 123b,b456a 123b,b456b
二、对于文件读取后，内容的替换
如，有个文件，text，内容如下：
1234 4567 this ok
python的处理方法可以这样处理，代码如下：
data_list=[i.replace('\n','') for i in data_list]；用了字符串的replace函数及列表推导式
with open('text') as f:
data_list=f.readlines()
data_list=[i.replace('\n','') for i in data_list]
print(data_list)
执行结果：
['1234', '4567', 'this', 'ok']
标签：如对,list,replace,字符串,print,data,替换,特殊字符 From： https://www.cnblogs.com/yxm-yxwz/p/17005169.html