如何在列中打印嵌套的python列表

时间:2013-07-07 18:22:30

标签: python list desktop

我有一个程序产生一个python列表作为其输出列表是一个嵌套列表:列表[名称,地址,电话号码]我希望能够以列式格式打印。似乎说这个问题是一个非常简单的想法,但我一直无法找到一种从列表中提取数据的简单方法。如果我打印(列表),我会得到这样的内容:['name','address','phone number']等列表中的每个项目。我在Windows平台上使用Python 3。 注意:我不是OOP程序员(此时)

关心比尔

5 个答案:

答案 0 :(得分:2)

像这样迭代列表:

for name,add,num in lis:
   print (name,add,num)

<强>演示:

>>> lis = [['name','address','phone number']]
>>> for name,add,num in lis:
...        print (name,add,num)
...     
name address phone number

您还可以使用string formatting获得更好看的输出:

>>> lis = [['name','address','phone number']]
>>> for name,add,num in lis:
       print ("{:<10}{:^20}{:^10}".format(name,add,num))
...     
name            address        phone number

答案 1 :(得分:2)

prettytable可以生成非常好看的ASCII表。 tutorial的示例:

from prettytable import PrettyTable

x = PrettyTable(["City name", "Area", "Population", "Annual Rainfall"])
x.align["City name"] = "l" # Left align city names
x.add_row(["Adelaide",1295, 1158259, 600.5])
x.add_row(["Brisbane",5905, 1857594, 1146.4])
x.add_row(["Darwin", 112, 120900, 1714.7])
x.add_row(["Hobart", 1357, 205556, 619.5])
x.add_row(["Sydney", 2058, 4336374, 1214.8])
x.add_row(["Melbourne", 1566, 3806092, 646.9])
x.add_row(["Perth", 5386, 1554769, 869.4])
print x

应该打印这样的东西

+-----------+------+------------+-----------------+
| City name | Area | Population | Annual Rainfall |
+-----------+------+------------+-----------------+
| Adelaide  | 1295 |  1158259   |      600.5      |
| Brisbane  | 5905 |  1857594   |      1146.4     |
| Darwin    | 112  |   120900   |      1714.7     |
| Hobart    | 1357 |   205556   |      619.5      |
| Sydney    | 2058 |  4336374   |      1214.8     |
| Melbourne | 1566 |  3806092   |      646.9      |
| Perth     | 5386 |  1554769   |      869.4      |
+-----------+------+------------+-----------------+

为您的用例调整此示例应该是微不足道的。

答案 2 :(得分:1)

for name, address, phone_number in a_list:
    print '{}\t{}\t{}'.format(name, address, phone_number)

答案 3 :(得分:1)

您可以使用print语句,例如,如果您希望所有字段都是20个字符宽:

for e in list:
    name, address, phone = e
    print "%20s %20s %20s" % (name, address, phone)

答案 4 :(得分:0)

如果超出字段大小,给出的其他答案将截断您的记录。如果您希望它们换行,则需要使用textwrap模块。

import textwrap
import itertools

col_width = 20

header = ["Name", "Address", "Phone Number"]

def columnar_record(record):
    columns = (textwrap.wrap(item, col_width) for item in record)
    line_tuples = itertools.zip_longest(*columns, fillvalue="")
    lines = ("".join(item.ljust(col_width) for item in line_tuple)
             for line_tuple in line_tuples)
    return "\n".join(lines)

def print_columns(records):
    print(columnar_record(header))
    for record in records:
        print(columnar_record(record))

a = ["Bill Bradley", "123 North Main St., Anytown, NY 12345", "800-867-5309"]
b = ["John Doe", "800 South Main Street, Othertown, CA 95112", "510-555-5555"]

print_columns([a, b])