import re
regex = re.compile(r"(?i)(?<=\")\s*(?:https?)?:\/\/[^\"]+\/(?=[^\"]*logo)[^\"]*(?:png|jpe?g|gif|tiff)\s*(?=\")", flags=re.MULTILINE)
test_str = ("<link rel=\"icon\" href=\"https://diabsolut.com/wp-content/uploads/2018/02/D-Logo-150x150.png\" sizes=\"32x32\">\n"
"<link rel=\"icon\" href=\"https://diabsolut.com/wp-content/uploads/2018/02/D-Logo.png\" sizes=\"192x192\">\n"
"<link rel=\"apple-touch-icon-precomposed\" href=\"https://diabsolut.com/wp-content/uploads/2018/02/D-Logo.png\">\n"
"<meta name=\"msapplication-TileImage\" content=\"https://diabsolut.com/wp-content/uploads/2018/02/D-Logo.png\">\n"
"<img width=\"200\" height=\"147\" src=\"https://diabsolut.com/wp-content/uploads/2017/05/Diabsolut-logo-01-e1496083111444.png\" class=\"attachment-large size-large\" alt=\"\">\n"
"<img src=\"https://diabsolut.com/wp-content/uploads/2019/03/White-FSM-logo.png\" width=\"330\" height=\"215\" data-no-retina=\"\" style=\"\">\n\n"
"<img src=\"https://diabsolut.com/wp-content/uploads/2017/05/Diabsolut-Cloud-Logo-Web-1.png\" width=\"277\" height=\"81\" data-no-retina=\"\" style=\"height: 100%; width: 100%; text-align: left; line-height: 16px; letter-spacing: 0px; font-weight: 300; font-size: 12px; border-color: rgb(255, 255, 255); border-style: none; margin: 0px; border-radius: 0px; padding: 0px;\" data-stylerecorder=\"true\"> \n\n"
"<img width=\"300\" height=\"179\" src=\"https://diabsolut.com/wp-content/uploads/2017/05/Watershed-CI-Logo-300x179.png\" class=\"attachment-medium size-medium\" alt=\"\" srcset=\"https://diabsolut.com/wp-content/uploads/2017/05/Watershed-CI-Logo-300x179.png 300w, https://diabsolut.com/wp-content/uploads/2017/05/Watershed-CI-Logo.png 350w\" sizes=\"(max-width: 300px) 100vw, 300px\"></a></div><h4 style=\"text-align: center\" class=\"vc_custom_heading vc_custom_1508180231294\">Consulting Solutions</h4>\n"
"logout")
matches = regex.finditer(test_str)
for match_num, match in enumerate(matches, start=1):
print(f"Match {match_num} was found at {match.start()}-{match.end()}: {match.group()}")
for group_num, group in enumerate(match.groups(), start=1):
print(f"Group {group_num} found at {match.start(group_num)}-{match.end(group_num)}: {group}")
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Python, please visit: https://docs.python.org/3/library/re.html