[英]How to concatenate Integers and strings in python
我正在尝试使用re库搜索具有指定模式的子字符串。 我编写了一个函数来执行此操作,但最终收到此错误:类型错误:无法连接str和整数。 下面是我的功能;
def searchValue(obs, concept):
try:
found = re.search('## !!'concept+'=(.+?)!! ##',obs)
except AttributeError:
found = 'null'
return found
obs= '!!1834=7850!! ## !!1915=Patient is awaiting imaging results, then start darcabazine 250 ml every 21 days.!! ## !!1915=Patient is HIV positive since 2016,no presents with pains on the plantar surface and pelvic pain.!! ## !!5096=2013-07-29!! ## !!5219=1068!! ## !!6504=7189!! ## !!6509=6511!! ## !!6575=1107!! ## !!6605=1065!! ## !!7191=MELANOMA OF THE RIGHT HEEL.!! ## !!8723=5622!!'
bett = searchValue(obs, 1915)
print(bett)
任何帮助将不胜感激。
如果您对子字符串位置不感兴趣,请使用:
def searchValue(obs, concept):
return re.findall('## !!'+ str(concept) + '=(.+?)!! ##',obs)
bett = searchValue(obs, 1915)
print(bett)
>>> ['Patient is awaiting imaging results, then start darcabazine 250 ml every 21 days.']
您的代码中有2个错误:
'## !!'concept
的+ (可能是拼写错误?)-产生语法错误的代码( SyntaxError ) 这里有你的格局(怎么re.search
的1个变量)应该像(最快捷的方式,当然还有改进的余地):
>>> concept = 1915 >>> obs = '!!1834=7850!! ## !!1915=Patient is awaiting imaging results, then start darcabazine 250 ml every 21 days.!! ## !!1915=Patient is HIV positive since 2016,no presents with pains on the plantar surface and pelvic pain.!! ## !!5096=2013-07-29!! ## !!5219=1068!! ## !!6504=7189!! ## !!6509=6511!! ## !!6575=1107!! ## !!6605=1065!! ## !!7191=MELANOMA OF THE RIGHT HEEL.!! ## !!8723=5622!!' >>> >>> found = re.search('## !!' + str(concept) + '=(.+?)!! ##', obs) # !!! Copy / paste this in your code >>> >>> found <re.Match object; span=(14, 110), match='## !!1915=Patient is awaiting imaging results, th> >>> found.group() '## !!1915=Patient is awaiting imaging results, then start darcabazine 250 ml every 21 days.!! ##'
在您的代码上进行了一些修改之后,我得到了一些看起来不错的东西; 如果没有让我知道。
重要的部分是为re.search()提供完整的字符串。 使用.format()完成。
问候
def searchValue(obs, concept):
try:
expression = '## !!{0}=(.+?)!! ##'.format(concept)
found = re.search(expression, obs)
except AttributeError:
found = 'null'
return found
obs= '!!1834=7850!! ## !!1915=Patient is awaiting imaging results, then start darcabazine 250 ml every 21 days.!! ## !!1915=Patient is HIV positive since 2016,no presents with pains on the plantar surface and pelvic pain.!! ## !!5096=2013-07-29!! ## !!5219=1068!! ## !!6504=7189!! ## !!6509=6511!! ## !!6575=1107!! ## !!6605=1065!! ## !!7191=MELANOMA OF THE RIGHT HEEL.!! ## !!8723=5622!!'
bett = searchValue(obs, 1915)
print(bett)
您正在尝试使用整数类型连接字符串,这就是为什么您会收到错误消息。 尝试使用它,并在解决您的问题时分享:
bett = searchValue(obs, str(1915))
还按@CristiFati的建议在概念之前添加+号
您错过了+。 您还需要使要连接的整数(概念)成为字符串,因为您无法将整数与字符串连接。 您还必须使要搜索的1915在'obs'变量中成为字符串,因为'obs'是不是整数的字符串。
def searchValue(obs, concept):
try:
found = re.search('## !!' + str(concept) + '=(.+?)!! ##',obs)
except AttributeError:
found = 'null'
return found
obs= '!!1834=7850!! ## !!1915=Patient is awaiting imaging results, then start darcabazine 250 ml every 21 days.!! ## !!1915=Patient is HIV positive since 2016,no presents with pains on the plantar surface and pelvic pain.!! ## !!5096=2013-07-29!! ## !!5219=1068!! ## !!6504=7189!! ## !!6509=6511!! ## !!6575=1107!! ## !!6605=1065!! ## !!7191=MELANOMA OF THE RIGHT HEEL.!! ## !!8723=5622!!'
bett = searchValue(obs, str(1915))
print(bett)
我想你的意思是:
found = re.search('## !!' + concept + '=(.+?)!! ##',obs)
正确的版本是:
found = re.search('## !!' + str(concept) + '=(.+?)!! ##',obs)
您必须将int强制转换为字符串。
您的代码是正确的,但是您缺少concat的+
def searchValue(obs, concept):
try:
found = re.search('## !!'+str(concept)+'=(.+?)!! ##',obs)
except AttributeError:
found = 'null'
return found
obs= '!!1834=7850!! ## !!1915=Patient is awaiting imaging results, then start darcabazine 250 ml every 21 days.!! ## !!1915=Patient is HIV positive since 2016,no presents with pains on the plantar surface and pelvic pain.!! ## !!5096=2013-07-29!! ## !!5219=1068!! ## !!6504=7189!! ## !!6509=6511!! ## !!6575=1107!! ## !!6605=1065!! ## !!7191=MELANOMA OF THE RIGHT HEEL.!! ## !!8723=5622!!'
bett = searchValue(obs, 1915)
print(bett)
确保将整数值转换为字符串并传递,以便将其视为字符串或使用str(Integer)进行转换
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