Здесь мы будем использовать две группы захвата и извлекать обе mystring
с, с и без идентификаторов:
(mystring\/([0-9]{10}))
Тест
# coding=utf8
# the above tag defines encoding for this document and is for Python 2.x compatibility
import re
regex = r"(mystring\/([0-9]{10}))"
test_str = "hello mystring/1234567890 hello world mystring/2345678901 hellomystring/1234567890 hello world mystring/2345678901 hello"
matches = re.finditer(regex, test_str, re.MULTILINE)
for matchNum, match in enumerate(matches, start=1):
print ("Match {matchNum} was found at {start}-{end}: {match}".format(matchNum = matchNum, start = match.start(), end = match.end(), match = match.group()))
for groupNum in range(0, len(match.groups())):
groupNum = groupNum + 1
print ("Group {groupNum} found at {start}-{end}: {group}".format(groupNum = groupNum, start = match.start(groupNum), end = match.end(groupNum), group = match.group(groupNum)))
# Note: for Python 2.7 compatibility, use ur"" to prefix the regex and u"" to prefix the test string and substitution.
RegEx
Если это выражение не требуется, его можно изменить / изменить в regex101.com .
Схема RegEx
jex.im визуализирует регулярные выражения:
Demo
const regex = /(mystring\/([0-9]{10}))/gm;
const str = `hello mystring/1234567890 hello world mystring/2345678901 hellomystring/1234567890 hello world mystring/2345678901 hello`;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}