Python-读取CSV并输出到字符串

Question

我是Python的新手，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。 任何帮助是极大的赞赏。

CSV范例：

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

所需的输出：

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

到目前为止，我已经能够读取CSV文件，并使用以下代码将其输出到stdout：

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

为什么要为简单的事情而烦恼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

您可以从csv模块开始。

现在，您只需要以“写入”模式open()另一个文件以进行输出，然后write()其write()即可。

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)