Python - Regular Expression to extract src attribute from img tag

Python - Regular Expression to extract src attribute from img tag

To extract the src attribute from an <img> tag using regular expressions in Python, you can use the following pattern:

import re pattern = r'<img[^>]*\ssrc\s*=\s*["\']([^"\']+)["\'][^>]*>'

Explanation of the pattern:

  • <img: Matches the literal <img tag.
  • [^>]*: Matches zero or more characters that are not >.
  • \s: Matches any whitespace character.
  • src: Matches the literal src.
  • \s*=\s*: Matches zero or more whitespace characters followed by = followed by zero or more whitespace characters.
  • ["\']: Matches either " or '.
  • ([^"\']+): Capturing group that matches one or more characters that are not " or '. This is the value of the src attribute.
  • ["\']: Matches either " or '.
  • [^>]*: Matches zero or more characters that are not >.

This pattern matches the src attribute within an <img> tag, regardless of the order of attributes and the use of single or double quotes for attribute values.

Here's an example of how to use this pattern in Python:

import re pattern = r'<img[^>]*\ssrc\s*=\s*["\']([^"\']+)["\'][^>]*>' html = ''' <html> <head> <title>Example</title> </head> <body> <img src="image1.jpg" alt="Image 1"> <img alt="Image 2" src='image2.jpg'> <img src="image3.jpg" width="100" height="100"> </body> </html> ''' matches = re.findall(pattern, html) print(matches)

Output:

['image1.jpg', 'image2.jpg', 'image3.jpg']

Examples

  1. "Python regex to extract src attribute from img tag"

    Description: Users are looking for a Python regular expression to extract the src attribute from HTML img tags.

    Code Implementation:

    import re html_content = '<img src="image.jpg" alt="Sample Image">' src_attribute = re.search(r'<img\s+src="([^"]+)"', html_content) if src_attribute: src_value = src_attribute.group(1) print(src_value) # Output: image.jpg

  2. "Python regex to extract src attribute from img tag with single quotes"

    Description: Users want a regular expression in Python that can handle img tags with the src attribute enclosed in single quotes.

    Code Implementation:

    import re html_content = "<img src='image.jpg' alt='Sample Image'>" src_attribute = re.search(r"<img\s+src='([^']+)'", html_content) if src_attribute: src_value = src_attribute.group(1) print(src_value) # Output: image.jpg

  3. "Python regex to extract src attribute from img tag with optional spaces"

    Description: This query suggests users want a regular expression in Python that can handle varying whitespace in the img tag.

    Code Implementation:

    import re html_content = '<img src = "image.jpg" alt="Sample Image">' src_attribute = re.search(r'<img\s+src\s*=\s*"([^"]+)"', html_content) if src_attribute: src_value = src_attribute.group(1) print(src_value) # Output: image.jpg

  4. "Python regex to extract src attribute from img tag in HTML string"

    Description: Users are looking for a Python regular expression to extract the src attribute from HTML content that includes multiple tags.

    Code Implementation:

    import re html_content = ''' <div> <img src="image1.jpg" alt="Image 1"> <img src="image2.jpg" alt="Image 2"> </div> ''' src_attributes = re.findall(r'<img\s+src="([^"]+)"', html_content) for src in src_attributes: print(src)

  5. "Python regex to extract src attribute from img tag with other attributes"

    Description: Users want a regular expression in Python capable of handling img tags with additional attributes besides src.

    Code Implementation:

    import re html_content = '<img src="image.jpg" alt="Sample Image" width="100" height="100">' src_attribute = re.search(r'<img\s+.*?src\s*=\s*"([^"]+)"', html_content) if src_attribute: src_value = src_attribute.group(1) print(src_value) # Output: image.jpg

  6. "Python regex to extract src attribute from img tag with multiline HTML content"

    Description: This query indicates users want a Python regular expression capable of handling HTML content with line breaks.

    Code Implementation:

    import re html_content = ''' <img src="image.jpg" alt="Sample Image"> ''' src_attribute = re.search(r'<img\s+src\s*=\s*"([^"]+)"', html_content, re.DOTALL) if src_attribute: src_value = src_attribute.group(1) print(src_value) # Output: image.jpg

  7. "Python regex to extract src attribute from img tag with optional attributes"

    Description: Users are looking for a regular expression in Python capable of handling img tags with the src attribute optionally present.

    Code Implementation:

    import re html_content = '<img alt="Sample Image">' src_attribute = re.search(r'<img\s+(?:[^>]*\s+)?src\s*=\s*"([^"]+)"', html_content) if src_attribute: src_value = src_attribute.group(1) print(src_value) # Output: None (No match found)

  8. "Python regex to extract src attribute from img tag in JavaScript code"

    Description: This query suggests users want a Python regular expression to extract the src attribute from JavaScript code containing HTML.

    Code Implementation:

    import re javascript_code = ''' var html = '<img src="image.jpg" alt="Sample Image">'; var src = html.match(/<img\s+src\s*=\s*"([^"]+)"/)[1]; ''' src_attribute = re.search(r'<img\s+src\s*=\s*"([^"]+)"', javascript_code) if src_attribute: src_value = src_attribute.group(1) print(src_value) # Output: image.jpg

  9. "Python regex to extract src attribute from img tag using named groups"

    Description: Users are interested in a Python regular expression that utilizes named groups to extract the src attribute from img tags.

    Code Implementation:

    import re html_content = '<img src="image.jpg" alt="Sample Image">' src_attribute = re.search(r'<img\s+src\s*=\s*"(?P<src>[^"]+)"', html_content) if src_attribute: src_value = src_attribute.group('src') print(src_value) # Output: image.jpg

  10. "Python regex to extract src attribute from img tag with different quote styles"

    Description: This query suggests users want a regular expression in Python capable of handling img tags with the src attribute enclosed in both single and double quotes.

    Code Implementation:

    import re html_content = '<img src="image.jpg" alt="Sample Image"> <img src=\'image2.jpg\' alt="Sample Image">' src_attributes = re.findall(r'<img\s+src=(?:"|\')(.*?)["\']', html_content) for src in src_attributes: print(src)

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