使用Python正則表達式提取JavaScript變量

Question

我想從網站中的javascript抓取一些數據。 我已使用Beautiful Soup提取了網頁的所有注釋。 但是，由於找不到適合Python的良好Javascript解析器，因此我打算提取感興趣的變量，然后最終使用eval將其轉換為Python變量。 但是，我不擅長正則表達式，並且無法編寫代碼來提取JS數組。

這是數據示例：

var FirstColumnInGrid = "partnername";
var strFlow4Display = "Sell";
var strProduct4Display = "Product";

var strLanguage = "en";
var col0 = ["World","Albania","Antigua and Barbuda","Argentina","Aruba","Australia","Austria","Bahrain","Barbados","Belgium","Belize","Bermuda","Bolivia","Bosnia and Herzegovina","Brazil","Canada","Cayman Islands","Chile","China","Colombia","Cote d'Ivoire","Croatia","Cuba","Curaçao","Cyprus","Denmark","Dominica","Dominican Republic","East Asia & Pacific","Ecuador","Egypt, Arab Rep.","El Salvador","Ethiopia(excludes Eritrea)","Europe & Central Asia","Finland","France","Gabon","Georgia","Germany","Ghana","Greece","Grenada","Guam","Guatemala","Guyana","Haiti","Honduras","Hong Kong, China","India","Indonesia","North America","Norway","Oman","Other Asia, nes","Pakistan","Panama","Paraguay","Peru","Philippines","Poland","Portugal","Qatar","Romania"];
var col1 = ["2865381.57","82.56","95.26","212.68","1275.13","11229.17","2.92","39.09","4.06","211279.63","4.06","15.84","33.98","13.45","126.10","20007.63","1.21","6995.31","4220.84","1459.76","73.12","222.49","281.74","83.09","27.48","4308.36","94.65","2127.18","49178.45","352.75","43.11"];
var col2 = ["28.92","68.08","19.23","2.79","6.56","46.53","0.53","95.64","0.04","39.70","0.04","4.72","1.52","97.82","0.37","23.41","0.23","20.23","9.28","2.08","24.65","67.17","0.87","2.63","32.37","96.81","99.52","57.44","1.52","98.16","9.41","100.00","1.64","7.91","0.30","1.25","0.15","1.04","0.25","99.66","24.53","81.02","92.67","3.24","12.87","4.91","87.97","68.20","44.46","22.99","100.00","6.59","19.10","1.94","100.00","96.63","59.02","40.89"];
var col3 = ["10.34","5.98","4.60","0.02","","10.17","","2.87","0.34","10.13","0.00","0.93","","15.98","0.06","17.06","","6.34","0.20","0.29","","3.87","","","7.00","22.05","","0.17","","0.22","7.30","0.63","0.33",""];
for (var i = 0; i < 116; i++) { var row = {};row["col0"] = col0[i];
row["col1"] = col1[i];
row["col2"] = col2[i];
row["col3"] = col3[i];
row["col4"] = col4[i];
row["col5"] = col5[i];
partData[i] = row; }

我想提取數組col1, col2, ... 我用過正則表達式：

col\d = 

匹配第一部分，但是直到最后，即直到] ，我似乎都無法匹配它。

我嘗試使用：

col\d = \[*\]

但是，它說這是一個無效的表達式。

具體來說，我想將數組提取為：

col0 = ["World","Albania","Antigua and Barbuda","Argentina","Aruba","Australia","Austria","Bahrain","Barbados","Belgium","Belize","Bermuda","Bolivia","Bosnia and Herzegovina","Brazil","Canada","Cayman Islands","Chile","China","Colombia","Cote d'Ivoire","Croatia","Cuba","Curaçao","Cyprus","Denmark","Dominica","Dominican Republic","East Asia & Pacific","Ecuador","Egypt, Arab Rep.","El Salvador","Ethiopia(excludes Eritrea)","Europe & Central Asia","Finland","France","Gabon","Georgia","Germany","Ghana","Greece","Grenada","Guam","Guatemala","Guyana","Haiti","Honduras","Hong Kong, China","India","Indonesia","North America","Norway","Oman","Other Asia, nes","Pakistan","Panama","Paraguay","Peru","Philippines","Poland","Portugal","Qatar","Romania"]

這樣我就可以潛在地使用eval將它們轉換為Python列表。

Answer 1

您現在所做的事情並不意味着正確的事情。 您可能使用通配符*希望匹配兩個方括號\\[*\\]但在正則表達式世界中*取決於先前的模式，因此\\[*表示零個或多個出現的方括號。

您正在尋找的是：

col\d = \[[^\]]*\]

我用[^\\]]*替換了* ，這對引擎而言意味着嘗試匹配除右括號之外的任何內容。

在這里觀看現場演示