python如何實(shí)現(xiàn)圖片壓縮
本工具是通過(guò)將圖片上傳到第三方網(wǎng)站tinypng,進(jìn)行壓縮后下載,覆蓋本地圖片,tinypng是一個(gè)強(qiáng)大的圖片處理網(wǎng)站,目前最可靠的無(wú)損壓縮網(wǎng)站。
代碼如下:
import requests
from idna import unicode
from selenium import webdriver
import time
import os
browser = webdriver.Firefox(executable_path='/Users/lyf/Library/Google/geckodriver')
def tiny_png(url):
# browser.get('https://tinypng.com/')
upload_file = browser.find_element_by_tag_name("input")
try:
upload_file.send_keys(url)
browser.implicitly_wait(20)
a = browser.find_element_by_link_text('download')
img_url = a.get_attribute('href')
print(img_url)
r = requests.get(img_url)
with open(url, 'wb') as f:
f.write(r.content)
browser.refresh()
time.sleep(2)
except Exception as e:
print(e)
def is_need_compress(img_path):
"""
判斷是否需要壓縮處理 >10k 進(jìn)行壓縮處理
:param img_path:
:return:
"""
if img_path.endswith('.jpg') or img_path.endswith('.png'):
size = os.path.getsize(img_path) / 1024
if size > 10.0:
print('文件大小:%sk' % size)
return True
return False
def file_loop(file_path):
"""
遍歷文件夾
:param file_path:
:return:
"""
files = os.listdir(file_path)
for fi in files:
fi_d = os.path.join(file_path, fi)
if os.path.isdir(fi_d):
file_loop(fi_d)
else:
child_path = os.path.join(file_path, fi_d)
print(child_path)
if is_need_compress(child_path):
tiny_png(child_path)
if __name__ == "__main__":
file_path = "/Users/lyf/AndroidStudioProjects/fubei/new-fubei-android-2.5-up/app/src/main/assets/www/assets"
browser.get('https://tinypng.com/')
file_loop(file_path)
改進(jìn)版
優(yōu)化點(diǎn):
1.遍歷完成本地文件夾再去上傳網(wǎng)站
2.所有圖片壓縮完成再去下載
3.啟動(dòng)多線程下載
4.設(shè)定時(shí)間為加載完網(wǎng)絡(luò)就去上傳文件(非常非常重要,提速N倍)
import requests
from selenium import webdriver
import time
import os
import _thread
import threading
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.common.by import By
# browser = webdriver.Firefox(executable_path='/Users/lyf/Library/Google/geckodriver')
browser = None
image_map = {}
compress_list = []
def tiny_png(url):
"""
打開(kāi)網(wǎng)站進(jìn)行圖片上傳下載
:param url:
:return:
"""
try:
upload_file = WebDriverWait(browser, 10).until(
EC.presence_of_element_located((By.TAG_NAME, "input"))
)
upload_file.send_keys(url)
a = WebDriverWait(browser, 20).until(
EC.presence_of_element_located((By.LINK_TEXT, "download"))
)
img_url = a.get_attribute('href')
compress_list.remove(url)
print(img_url)
image_map[url] = img_url
_thread.start_new_thread(sleep, (4,))
print('刷新網(wǎng)頁(yè)')
browser.refresh()
time.sleep(2)
except Exception as e:
print(e.__str__())
browser.execute_script('window.stop()')
def sleep(delay):
"""
一定的時(shí)間后 未加載完網(wǎng)頁(yè) 只要控件加載出來(lái)就可以停止網(wǎng)頁(yè)加載
:param delay:
:return:
"""
browser.set_page_load_timeout(delay)
browser.set_script_timeout(delay)
def down_img(file_path, down_url):
"""
下載圖片覆蓋原地址
:param file_path:
:param down_url:
:return:
"""
r = requests.get(down_url)
with open(file_path, 'wb') as f:
f.write(r.content)
print('下載完成:%s' % down_url)
def is_need_compress(img_path):
"""
判斷是否需要壓縮處理 >10k 進(jìn)行壓縮處理
:param img_path:
:return:
"""
if img_path.endswith('.jpg') or img_path.endswith('.png'):
size = os.path.getsize(img_path) / 1024
print(img_path)
print('文件大小:%sk' % size)
if size > 5000.0:
print('*****' * 30)
print('這么大的圖片搞笑嗎')
print(img_path)
print('*****' * 30)
if size > 0.0 and size < 10.0:
return True
return False
def file_loop(file_path, compress_list):
"""
遍歷文件夾
:param file_path:
:return:
"""
files = os.listdir(file_path)
for fi in files:
fi_d = os.path.join(file_path, fi)
if os.path.isdir(fi_d):
file_loop(fi_d, compress_list)
else:
child_path = os.path.join(file_path, fi_d)
if is_need_compress(child_path):
compress_list.append(child_path)
def down_all():
"""
下載所有的圖片
:return:
"""
thread_list = []
for k, v in image_map.items():
print('key:%s value:%s' % (k, v))
th = threading.Thread(target=down_img, args=(k, v))
th.start()
thread_list.append(th)
for r in thread_list:
r.join()
def loop_press():
"""
輪詢獲取下載地址
:return:
"""
for url in compress_list:
tiny_png(url)
def start_browser():
"""
啟動(dòng)瀏覽器
:return:
"""
global browser
browser = webdriver.Firefox(executable_path='/Users/lyf/Library/Google/geckodriver')
_thread.start_new_thread(sleep, (10,))
print('加載網(wǎng)頁(yè)')
try:
browser.get('https://tinypng.com/')
except:
browser.execute_script('window.stop()')
if __name__ == "__main__":
start_time = time.time()
file_path = "/Users/lyf/Desktop/www/assets"
# 獲取本地所有需要壓縮的圖片
file_loop(file_path, compress_list)
print('符合條件的圖片有%s張' % len(compress_list))
start_browser()
loop_press()
while len(compress_list) > 0:
browser.quit()
start_browser()
loop_press()
# 多線程下載拿到所有返回下載的地址
down_all()
end = time.time()
time_m = end - start_time
print("time: " + str(time_m))
browser.quit()
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