Python - 读取 CSV 并输出到字符串

Question

我对 Python 还是很陌生，我想创建一个脚本来读取包含两列的 UTF-8 CSV 文件并将输出写入 UTF-8 字符串文件。非常感谢任何帮助。

CSV 示例：

KEY,LANGUAGE
keyname1,"Nononono “%{placeholder}”?"
keyname2,"Nononon %{placeholder} nononon."
keyname3,"Open in %{placeholder}?"
keyname4,GB
keyname5,TB

期望的输出：

keyname1 = "Nononono “%{placeholder}”?",
keyname2 = "Nononon %{placeholder} nononon.",
keyname3 = "Open in %{placeholder}?",
keyname4 = GB,
keyname5 = TB

到目前为止，我能够读取 CSV 文件并使用以下代码将其输出到标准输出：

import csv

def csv_dict_reader(file_obj):

    reader = csv.DictReader(file_obj, delimiter=',')
    for line in reader:
        print(line["KEY"]),
        print(line["LANGUAGE"])

if __name__ == "__main__":
    with open("data.csv") as f_obj:
        csv_dict_reader(f_obj)

Answer 1

为什么要为这么简单的事情费心python？

sed -e 1d -e 's/,/ = /' -e 's/$/,/' data.csv

Answer 2

将您的代码更改为：

import csv
def csv_dict_reader(file_obj):

reader = csv.DictReader(file_obj, delimiter=',')
for line in reader:
    print("%s = %s"%(line["KEY"],line["LANGUAGE"]))
if __name__ == "__main__":
with open("data.csv") as f_obj:
    csv_dict_reader(f_obj)

Answer 3

csv 模块让您有了一个良好的开端。

现在你只需要open()另一个文件以“写”模式进行输出，然后write()就可以了。

import csv

def csv_dict_reader(file_obj):
    """Read a CSV file with 2 columns and output a new string. """
    reader = csv.DictReader(file_obj, delimiter=',')
    buf = ""
    for line in reader:
        buf += line["KEY"] + " = " + line["LANGUAGE"] + "\n"

    return buf

if __name__ == "__main__":
    with open("test_trans_csv.csv") as f_obj:
        with open("test_trans_output.csv", "w") as f_output:
            txt = csv_dict_reader(f_obj)
            f_output.write(txt)