[英]Extracting dates from string and into a dataframe into a new column python
[英]Extracting String from dataframe in Python
我有一個包含“genres列”的數據框,它的結構如下:
0 [{"id": 28, "name": "Action"}, {"id": 12, "nam..."
1 [{"id": 12, "name": "Adventure"}, {"id": 14, "..."
2 [{"id": 28, "name": "Action"}, {"id": 12, "nam..."
3 [{"id": 28, "name": "Action"}, {"id": 80, "nam..."
4 [{"id": 28, "name": "Action"}, {"id": 12, "nam..."
Name: genres, dtype: object
我只是想提取像“動作”“冒險”等類型。
我使用了不同的方法,但都沒有實現。
d2 = pd.read_csv(r"C:\Users\nxx\PycharmProjects\tmdb_5000_movies.csv")
d2=pd.DataFrame(d2)
d2["genres"] = re.search(" (.?)}",d2["genres"]).group(1,2)
執行上面的代碼時,我得到以下錯誤。
Name: genres, dtype: object
return _compile(pattern, flags).search(string)
TypeError: expected string or bytes-like object
我試圖將列轉換為str,但它不起作用。
我也試過了。
x=["Action","Crime","Horror","Drama","Comedy","Romance","Thriller","Documentary","Family","Adventure","Animation" "Science Fiction","Mystery","Fantasy","War","History","Music"]
d2["genres"] = d2["genres"].apply(lambda x: ", ".join(x["Action"] for i in x)) print(d2["genres"])
d2["genres"] = d2["genres"].apply(lambda x: ", ".join(x["Action"] for i in x)) TypeError: string indices must be integers –
如果需要從列表中提取名稱
采用:
d2 = pd.read_csv(r"C:\Users\nxx\PycharmProjects\tmdb_5000_movies.csv")
d2["genres"] = d2["genres"].apply(lambda x: ", ".join(i["name"] for i in x))
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