小编Rya*_*ini的帖子

我正在尝试使用以下代码导入CSV:

    import csv
    import sys

    def load_csv(filename):
        # Open file for reading
        file = open(filename, 'r')

        # Read in file
        return csv.reader(file, delimiter=',', quotechar='\n')

    def main(argv):
        csv_file = load_csv("myfile.csv")

        for item in csv_file:
            print(item)

    if __name__ == "__main__":
        main(sys.argv[1:])

这是我的csv文件的示例:

    foo,bar,test,1,2
    this,wont,work,because,?

而错误:

    Traceback (most recent call last):
      File "test.py", line 22, in <module>
        main(sys.argv[1:])
      File "test.py", line 18, in main
        for item in csv_file:
      File "/usr/lib/python3.2/encodings/ascii.py", line 26, in decode
        return codecs.ascii_decode(input, self.errors)[0]
    UnicodeDecodeError: 'ascii' codec can't decode byte …

可能重复:
Python中的转置/解压缩功能

我有一个序列列表,每个序列有两个项目.我想把它变成两个列表.

catalog = [('abc', '123'), ('foo', '456'), ('bar', '789'), ('test', '1337')]

现在我只是这样做:

names = []
vals = []

for product in catalog:
        names.append(product[0])
        vals.append(product[1])

print (names)
print (vals)

哪个输出两个列表,并且工作得很好:

['abc', 'foo', 'bar', 'test']
['123', '456', '789', '1337']

有更整洁,更'pythonic'的方式吗？或者我应该坚持我拥有的东西？对编程风格的任何更正或反馈都是受欢迎的,我是新手,并试图学习最佳实践.