正则表达式02-转义字符处理

#encoding: utf-8
import re

text = "apple price is $299"
ret = re.search("$d+",text)
print(ret.group())

# r = raw = 原生的
# text = '
'
# print(text)

text = "c" #= '
'
# python：'\n' = 

# \\n =》 \n
# \c

# 正则表达式中：
 =
# \n =》 

# \c =》 c
ret = re.match(r'\c',text)
print(ret.group())