我正在尝试从 CSV 中将每个值读入 python 字典。我究竟做错了什么？

Question

我正在尝试在 DynamoDB（亚马逊网络服务）中使用 batch_writer()。

Answer 1

您的代码嵌套不正确。下面是一些示例代码，首先将语言文件读入字典，然后遍历区域文件：

languages = {}
table = []

# Load languages, catering for multiple languages
with open('shortlist_languages.csv') as languages_file:
    for line in languages_file:
        fields = line.strip().split(',')
        languages[fields[0]] = ','.join(fields[2:])

# Load countries
with open('shortlist_area.csv') as countries_file:
    for line in countries_file:
        fields = line.strip().split(',')
        table.append(
            {
                'Country Name': fields[1],
                'Languages': languages[fields[0]],
                'ISO3': fields[0],
                'Area': fields[2]
 
            }
        )

print(table)

（我懒得用CSV函数了！）

输出为：

[
    {
        "Country Name": "Country Name",
        "Languages": "Languages",
        "ISO3": "ISO3",
        "Area": "Area"
    },
    {
        "Country Name": "Albania",
        "Languages": "Albanian",
        "ISO3": "ALB",
        "Area": "28748"
    },
    {
        "Country Name": "Algeria",
        "Languages": "Arabic,Tamazight",
        "ISO3": "DZA",
        "Area": "2381741"
    },
    {
        "Country Name": "Andorra",
        "Languages": "Catalan",
        "ISO3": "AND",
        "Area": "468"
    },
    {
        "Country Name": "Angola",
        "Languages": "Portuguese",
        "ISO3": "AGO",
        "Area": "1246700"
    }
]

请注意，阿尔及利亚的输出中包含多种语言。