我需要在搜索替换模式之前和之后写入文件。我写了下面的代码。我已经使用函数写入输出文件,它工作正常。但我有大约20个这样的替换模式,我觉得我不是在写一个好的代码,因为我需要为所有这些替换创建函数。你能告诉我有没有其他方法来实现这个?
import re
Report_file = open("report.txt", "w")
st = '''<TimeLog>
<InTime='10Azx'>1056789</InTime>
<OutTime='14crg'>1056867</OutTime>
<PsTime='32lxn'>1056935</PsTime>
<ClrTime='09zvf'>1057689</ClrTime>
</TimeLog>'''
def tcnv(str):
Report_file.write("Previous TS: " + str + "\n\n")
v1 = re.search(r"(?i)<clrtime='(\d+\w+)'>", str)
val1 = v1.group(1)
v2 = re.search(r"(?i)(<clrtime='(\d+\w+)'>(.*?)</clrtime>)", str)
val2 = v2.group(3)
soutval = "<Clzone><clnvl='" + val1 + "'>" + val2 + "</clnvl></Clzone>"
Report_file.write("New TS: " + soutval + "\n")
return soutval
st = re.sub(r"(?i)(<clrtime='(\d+\w+)'>(.*?)</clrtime>)", lambda m: tcnv(m.group(1)), st)
st = re.sub(r"(?i)<intime='(\d+\w+)'>(.*?)</intime>", "<Izone><Invl='\\1'>\\2</Invl></Izone>", st)
st = re.sub(r"(?i)<outtime='(\d+\w+)'>(.*?)</outtime>", "<Ozone><onvl='\\1'>\\2</onnvl></Ozone>", st)
st = re.sub(r"(?i)<pstime='(\d+\w+)'>(.*?)</pstime>", "<Pszone><psnvl='\\1'>\\2</psnvl
答案 0 :(得分:1)
我不明白为什么你把re.IGNORECASE标志放在(?i)
的形式下,所以我不使用下面的解决方案,并且模式是用必要的大写字母写的,根据你的样本
请注意,您应该使用with
语句打开文件,这样会好得多:
with open('filename.txt','rb') as f:
ch = f.read()
答案
import re
st = '''<InTime='10Azx'>1056789</InTime>
<OutTime='14crg'>1056867</OutTime>
<PsTime='32lxn'>1056935</PsTime>
<ClrTime='09zvf'>1057689</ClrTime>
'''
d = dict(zip(('InTime','OutTime','PsTime','ClrTime'),
(('Izone><Invl','/Invl></Izone'),
('Ozone><onvl','/onnvl></Ozone'),
('Pszone><psnvl','/psnvl></Pszone'),
('Clzone><clnvl','/clnvl></Clzone'))
)
)
def ripl(ma,d=d):
return "<{}='{}'>{}<{}>".format(d[ma.group(1)][0],
ma.group(2),
ma.group(3),
d[ma.group(1)][1])
st2 = re.sub(r"<(InTime|OutTime|PsTime|ClrTime)='(\d+\w+)'>(.*?)</\1>",
ripl, st)
print '%s\n\n%s\n' % (st,st2)