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python-3.x - 在显示期间对字典内列表中的字符串值进行文本换行

问题描述

我有一本像下面这样的字典，但我在尝试对以下内容进行文本换行时遇到了麻烦：

dict= { 'ProductA' : ['2020-08-03 16:26:21', 'This painting was done by XNB.The artist seeks to portray  the tragedies caused by event XYZ. The painting weighs 2kg.'], 'ProductB':['2020-08-03 16:26:21','This painting is done by ONN.This painting is done by ONN.Decades later, it was discovered in the black market of country XYZ.It was bought for 2 million dollars by ABC.']}

字典显示的期望结果：

  Product Name      Last Edited               Information
  Product A         2020-08-03 16:26:21       This painting was done by XNB.The artist 
                                              seeks to portray  the tragedies caused by
                                              event XYZ. The painting weighs 2kg.

  Product B         2020-08-03 16:26:21       This painting is done by ONN.This painting
                                              is done by ONN.Decades later, it was 
                                              discovered in the black market of country
                                              XYZ.It was bought for 2 million dollars 
                                              by ABC.

下面是我尝试输出上述显示：

from textwrap import wrap

    print("{:<25} {:<30} {:<10}".format('Product Name','Last Edited','Information'))
for product_name, data in dict.items():
    last_edit, info = data
    wrapped_info=wrap(info, 45)
    
    print("{:<25} {:<30} {:<10}".format(product_name, last_edit, wrapped_info))

#TypeError：传递给列表的格式字符串不受支持。格式

我不太明白错误想说什么。我哪里出错了，我应该如何编码以获得所需的输出？

标签： python-3.x

解决方案

您的代码中的问题是wrap()返回字符串列表。您需要使用 将结果转换wrap()为字符串join()。

尝试这个：

from textwrap import wrap

d = { 'ProductA' : ['2020-08-03 16:26:21', 'This painting was done by XNB.The artist seeks to portray  the tragedies caused by event XYZ. The painting weighs 2kg.'], 'ProductB':['2020-08-03 16:26:21','This painting is done by ONN.This painting is done by ONN.Decades later, it was discovered in the black market of country XYZ.It was bought for 2 million dollars by ABC.']}

print("{:<25} {:<30} {:<10}".format('Product Name','Last Edited','Information'))
for product, data in d.items():
    date, info = data
    wrapped_info = f'\n{" " * (25 + 30 + 2)}'.join(wrap(info, 45)) 
    print("{:<25} {:<30} {:<10}\n".format(product, date, wrapped_info))

输出：

Product Name              Last Edited                    Information
ProductA                  2020-08-03 16:26:21            This painting was done by XNB.The artist
                                                         seeks to portray  the tragedies caused by
                                                         event XYZ. The painting weighs 2kg.

ProductB                  2020-08-03 16:26:21            This painting is done by ONN.This painting is
                                                         done by ONN.Decades later, it was discovered
                                                         in the black market of country XYZ.It was
                                                         bought for 2 million dollars by ABC.

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