import re
s = r'\n'
pattern = r'\n'
v = re.match(pattern,s)
print(v.group())
import re
s = r'\n'
pattern = r'\n'
v = re.match(pattern,s)
print(v.group())
patten写错,应该为pattern = r'\\n'。'\n‘为转义字符,需再加上反斜杆转义,才能匹配出想要的结果。
import re
s = r'\n'
pattern = r'\\n'
v = re.match(pattern, s)
print(v.group())
output:
\n