從列表中刪除不需要的字符

Question

我有一個結構與此類似的項目列表：

[{'Condition': '2013 Yamaha FJR 1300',
 'Date': '2018-02-28 11:30',
 'Description': ['\n        ',
  '\n2013 Yamaha FJR 1300 Sport Touring, 4 cylinder, 12.120 miles, silver, cruise control, traction control, ABS brakes, heated hand grips, Two Brothers exhaust, handle bar risers, 6.5 gal. gas tank, adjustable windshield, saddlebags, excellent condition, very clean.',
  '\n$ 7.500 (828) 250-0373 WWW.GREENVALLEYCARS.COM',
  '\n',
  '\n    '],
 'Images': [],
 'Latitude': '35.599694',
 'Location': ' (Asheville)',
 'Longitude': '-82.628866',
 'Price': '$7500',
 'Title': '2013 Yamaha FJR 1300',
 'Url': 'https://asheville.craigslist.org/mcd/d/2013-yamaha-fjr-1300/6513320993.html',
 '_id': {'$oid': '5a96dbee6f9ca5410cc9ed98'}},

{'Condition': '2014 Honda Accord Sedan',
 'Date': '2018-02-28 11:24',
 'Description': ['\n        ',
  '\n2014 Honda Accord  Automatic, White , On Tan, It has Only 41,980 Miles It Has Spoiler, Power Windows, and Mirrors, Tan Cloth Seats, Power Seats, 4 Cylinder, 4 Door, Radio, 6 CD Changer, FM,AM,CD, XM Radio, Bluetooth, Back up Camera, Side and Curtain Air Bag, 16 Inch Factory Wheels with Firestone  Great Tires, Tinted Glass, And Much More, Clean On inside, Runs and Drives Like New, Call Me for more info, 864-266-6936 Willing to Negotiate if offer is fair.....',
  '\n',
  '\n',
  '\n',
  '\n',
  '\n',
  '\n',
  '\nhonda, bmw, crv, mercedes, ford, mazda, lx, rx, ls, is, gs, 470 honda, lexus, toyota, ford, accord, civic, coupe, Mercedes,Honda Pilot, Lexus gx470 & 460, Chevrolet Tahoe, suburban, Tahoe, land rover, Nissan armada, GMC Yukon, Terrian, CX7, BMW x5, GMC Terrian, B 2011, 2010, 2009, 2008, 2007, 2012, 2013, 2014, 2016, 2006, 2005, 2017, 2018, ',
  '\n',
  '\n',
  '\n',
  '\n',
  '\n',
  '\n',
  '\n',
  '\n',
  '\n',
  '\n',
  '\n',
  '\n',
  '\n',
  '\n',
  '\n    '],
 'Images': ['https://images.craigslist.org/00b0b_gNOi9VtqAy3_600x450.jpg',
  'https://images.craigslist.org/00a0a_gs2eKxUlQho_600x450.jpg',
  'https://images.craigslist.org/00l0l_lPmE8ML0zcb_600x450.jpg',
  'https://images.craigslist.org/00x0x_bS9gCuxM7ID_600x450.jpg',
  'https://images.craigslist.org/01010_dTS4DnHjVWW_600x450.jpg',
  'https://images.craigslist.org/00w0w_70D0xeDKa7d_600x450.jpg',
  'https://images.craigslist.org/00606_4SUFT4ZCbmO_600x450.jpg',
  'https://images.craigslist.org/00k0k_1AQ7kVbviPN_600x450.jpg',
  'https://images.craigslist.org/00d0d_3STBecGHaXD_600x450.jpg',
  'https://images.craigslist.org/01717_guG6n90XfQt_600x450.jpg',
  'https://images.craigslist.org/00h0h_8be8866trLr_600x450.jpg',
  'https://images.craigslist.org/00B0B_gaQQvQHlARl_600x450.jpg',
  'https://images.craigslist.org/00b0b_ih84Nskx5xj_600x450.jpg',
  'https://images.craigslist.org/01616_aveWbY1HQvr_600x450.jpg',
  'https://images.craigslist.org/00x0x_Fflsg0wwsK_600x450.jpg',
  'https://images.craigslist.org/00b0b_6FBg7KV8HYv_600x450.jpg',
  'https://images.craigslist.org/00J0J_3vd5Ip3mQ5S_600x450.jpg',
  'https://images.craigslist.org/00L0L_loNV2CrnnLn_600x450.jpg',
  'https://images.craigslist.org/00K0K_fh8oSEa9fKn_600x450.jpg',
  'https://images.craigslist.org/00r0r_8P0SjsOgNd5_600x450.jpg',
  'https://images.craigslist.org/00k0k_ZY0ywNmKkr_600x450.jpg',
  'https://images.craigslist.org/00y0y_7Gie7XD8uuH_600x450.jpg',
  'https://images.craigslist.org/00c0c_2nVDzLJhnYi_600x450.jpg',
  'https://images.craigslist.org/00202_7k10eK3bxMn_600x450.jpg'],
 'Latitude': '35.039000',
 'Location': ' (Cowpens)',
 'Longitude': '-81.822000',
 'Price': '$10995',
 'Title': '2014 Honda Accord  White  41k',
 'Url': 'https://asheville.craigslist.org/ctd/d/2014-honda-accord-white-41k/6513312696.html',
 '_id': {'$oid': '5a96dbf16f9ca5410cc9ed99'}}]

當我運行以下代碼時：

wanted_keys = ['Title', 'Location', 'Price', 'Description', 'Url', 'Latitude', 'Longitude'] 
for item in cl_used_items_raw[:2]:
    for k in wanted_keys:
        lines = str(item[k]).split()
        split_lines = [line.replace('\n', '').strip() for line in lines]
        print("{}".format(' '.join(split_lines) + '\t'))
    print('\n')

我得到一個輸出：

2013 Yamaha FJR 1300    
(Asheville) 
$7500   
['\n ', '\n2013 Yamaha FJR 1300 Sport Touring, 4 cylinder, 12.120 miles, silver, cruise control, traction control, ABS brakes, heated hand grips, Two Brothers exhaust, handle bar risers, 6.5 gal. gas tank, adjustable windshield, saddlebags, excellent condition, very clean.', '\n$ 7.500 (828) 250-0373 WWW.GREENVALLEYCARS.COM', '\n', '\n ']    
https://asheville.craigslist.org/mcd/d/2013-yamaha-fjr-1300/6513320993.html 
35.599694   
-82.628866  


2014 Honda Accord White 41k 
(Cowpens)   
$10995  
['\n ', '\n2014 Honda Accord Automatic, White , On Tan, It has Only 41,980 Miles It Has Spoiler, Power Windows, and Mirrors, Tan Cloth Seats, Power Seats, 4 Cylinder, 4 Door, Radio, 6 CD Changer, FM,AM,CD, XM Radio, Bluetooth, Back up Camera, Side and Curtain Air Bag, 16 Inch Factory Wheels with Firestone Great Tires, Tinted Glass, And Much More, Clean On inside, Runs and Drives Like New, Call Me for more info, 864-266-6936 Willing to Negotiate if offer is fair.....', '\n', '\n', '\n', '\n', '\n', '\n', '\nhonda, bmw, crv, mercedes, ford, mazda, lx, rx, ls, is, gs, 470 honda, lexus, toyota, ford, accord, civic, coupe, Mercedes,Honda Pilot, Lexus gx470 & 460, Chevrolet Tahoe, suburban, Tahoe, land rover, Nissan armada, GMC Yukon, Terrian, CX7, BMW x5, GMC Terrian, B 2011, 2010, 2009, 2008, 2007, 2012, 2013, 2014, 2016, 2006, 2005, 2017, 2018, ', '\n', '\n', '\n', '\n', '\n', '\n', '\n', '\n', '\n', '\n', '\n', '\n', '\n', '\n', '\n '] 
https://asheville.craigslist.org/ctd/d/2014-honda-accord-white-41k/6513312696.html  
35.039000   
-81.822000

我知道我已經接近了，但我正在努力確定如何編寫我的 for 循環以刪除 Description 值中的額外空白字符，同時仍然保持我已經擁有的輸出結構？

Answer 1

line.strip()不會就地修改line - 它返回修改后的值，因此您使用它的方式不會以任何方式影響line 。

你可能的意思是：

split_lines = [line.strip() for line in lines]

Answer 2

>>> desc = ['\n        ',
...   '\n2013 Yamaha FJR 1300 Sport Touring, 4 cylinder, 12.120 miles, silver, cruise control, traction control, ABS brakes, heated hand grips, Two Brothers exhaust, handle bar risers, 6.5 gal. gas tank, adjustable windshield, saddlebags, excellent condition, very clean.',
...   '\n$ 7.500 (828) 250-0373 WWW.GREENVALLEYCARS.COM',
...   '\n',
...   '\n    ']

前：

>>> desc
['\n        ', '\n2013 Yamaha FJR 1300 Sport Touring, 4 cylinder, 12.120 miles, silver, cruise control, traction control, ABS brakes, heated hand grips, Two Brothers exhaust, handle bar risers, 6.5 gal. gas tank, adjustable windshield, saddlebags, excellent condition, very clean.', '\n$ 7.500 (828) 250-0373 WWW.GREENVALLEYCARS.COM', '\n', '\n    ']

應用 replace() 和 strip()

[x.replace('\n', '').strip() for x in desc ]

后：

['', '2013 Yamaha FJR 1300 Sport Touring, 4 cylinder, 12.120 miles, silver, cruise control, traction control, ABS brakes, heated hand grips, Two Brothers exhaust, handle bar risers, 6.5 gal. gas tank, adjustable windshield, saddlebags, excellent condition, very clean.', '$ 7.500 (828) 250-0373 WWW.GREENVALLEYCARS.COM', '', '']

如果我理解正確，您可以用空字符串替換換行符，然后刪除周圍的空格

 [x.replace('\n', '').strip() for x in desc ]

Answer 3

這給了我正確的輸出：

for item in cl_used_items_raw[:2]:
    for k in wanted_keys:
        if k == 'Description':
            lines = str(''.join(item[k])).split()
            split_lines = [line.replace('\n', '').strip() for line in lines]
            split_lines = ' '.join(split_lines)
            print(split_lines)
        else:
            lines = str(item[k]).split()
            split_lines = [line.replace('\n', '').strip() for line in lines]
            print("{}".format(' '.join(split_lines) + '\t'))       
    print('\n')