Created
February 26, 2013 19:39
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Basic scraping of Amazon reviews
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import requests | |
from bs4 import BeautifulSoup, NavigableString | |
def get_review_text(block): | |
"""Get just the text of a review from it's DIV""" | |
strings = [] | |
for possible_text in block.children: | |
if isinstance(possible_text, NavigableString): | |
stripped_text = possible_text.strip() | |
if len(stripped_text) > 0: | |
strings.append(stripped_text) | |
return "\n".join(strings) | |
def get_review_texts(review_html): | |
"""Get all the reviews on a review page""" | |
soup = BeautifulSoup(review_html) | |
table = soup.find(id="productReviews").tr.td | |
review_blocks = table.find_all("div", recursive=False) | |
return [get_review_text(block) for block in review_blocks] | |
def get_review_page_count(review_html): | |
"""Get the number of review pages""" | |
soup = BeautifulSoup(review_html) | |
try: | |
return int(soup.find("span", class_="paging").find_all("a")[-2].text) | |
except: | |
return 1 | |
def get_all_reviews(review_url): | |
"""Get all the reviews, given a review page URL""" | |
# sanitize the url | |
review_url = "/".join(review_url.split("/")[:-1]) | |
first_review_page = requests.get(review_url).text | |
review_page_count = get_review_page_count(first_review_page) | |
reviews = [] | |
for i in range(1, review_page_count + 1): | |
url = review_url + "?pageNumber=%d" % i | |
review_html = requests.get(url).text | |
reviews.extend(get_review_texts(review_html)) | |
return reviews |
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