将列表格式化为表输出的列（python 3）
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Formatting Lists into columns of a table output (python 3)
提问by Jake Cannon
I have data that is collected in a loop and stored under separate lists that hold only the same datatypes (e.g. only strings, only floats) as shown below:
我有在循环中收集并存储在仅包含相同数据类型（例如，仅字符串，仅浮点数）的单独列表下的数据，如下所示：
names = ['bar', 'chocolate', 'chips']
weights = [0.05, 0.1, 0.25]
costs = [2.0, 5.0, 3.0]
unit_costs = [40.0, 50.0, 12.0]
I have treated these lists as "columns" of a table and wish to print them out as a formatted table that should look something like this:
我已将这些列表视为表格的“列”，并希望将它们打印为格式化的表格，该表格应如下所示：
Names | Weights | Costs | Unit_Costs
----------|---------|-------|------------
bar | 0.05 | 2.0 | 40.0
chocolate | 0.1 | 5.0 | 50.0
chips | 0.25 | 3.0 | 12.0
I only know how to print out data from lists horizontally across table rows, I have looked online (and on this site) for some help regarding this issue, however I only managed to find help for getting it to work in python 2.7 and not 3.5.1 which is what I am using.
my question is:
how do I get entries from the above 4 lists to print out into a table as shown above.
我只知道如何在表格行中水平打印列表中的数据，我在网上（和本网站）查看了有关此问题的一些帮助，但是我只设法找到了使其在 python 2.7 而不是 3.5 中工作的帮助.1 这就是我正在使用的。
我的问题是：
如何从上述 4 个列表中获取条目以打印到如上所示的表格中。
Each item index from the lists above is associated (i.e. entry[0] from the 4 lists is associated with the same item; bar, 0.05, 2.0, 40.0).
上面列表中的每个项目索引都是相关联的（即 4 个列表中的条目 [0] 与同一项目相关联；bar，0.05, 2.0, 40.0）。
回答by Israel Unterman
Here is a small implementation that does what you want in basic python (no special modules).
这是一个小型实现，可以在基本 python 中执行您想要的操作（没有特殊模块）。
names = ['bar', 'chocolate', 'chips']
weights = [0.05, 0.1, 0.25]
costs = [2.0, 5.0, 3.0]
unit_costs = [40.0, 50.0, 12.0]
titles = ['names', 'weights', 'costs', 'unit_costs']
data = [titles] + list(zip(names, weights, costs, unit_costs))
for i, d in enumerate(data):
line = '|'.join(str(x).ljust(12) for x in d)
print(line)
if i == 0:
print('-' * len(line))
Output:
输出：
names |weights |costs |unit_costs
---------------------------------------------------
bar |0.05 |2.0 |40.0
chocolate |0.1 |5.0 |50.0
chips |0.25 |3.0 |12.0
回答by Rahul K P
Some interesting table draw with texttable.
一些有趣的表格绘制texttable。
import texttable as tt
tab = tt.Texttable()
headings = ['Names','Weights','Costs','Unit_Costs']
tab.header(headings)
names = ['bar', 'chocolate', 'chips']
weights = [0.05, 0.1, 0.25]
costs = [2.0, 5.0, 3.0]
unit_costs = [40.0, 50.0, 12.0]
for row in zip(names,weights,costs,unit_costs):
tab.add_row(row)
s = tab.draw()
print (s)
Result
结果
+-----------+---------+-------+------------+
| Names | Weights | Costs | Unit_Costs |
+===========+=========+=======+============+
| bar | 0.050 | 2 | 40 |
+-----------+---------+-------+------------+
| chocolate | 0.100 | 5 | 50 |
+-----------+---------+-------+------------+
| chips | 0.250 | 3 | 12 |
+-----------+---------+-------+------------+
You can install texttablewith using this command pip install texttable.
您可以texttable使用此命令进行安装pip install texttable。
回答by Jake Cannon
After visiting docs.python.org/3/library/functions.html#zip (link provided by cdarke)
访问 docs.python.org/3/library/functions.html#zip（链接由 cdarke 提供）后
I managed to find the solution I needed:
我设法找到了我需要的解决方案：
using the zip method I created a new summary list of the associated data:
我使用 zip 方法创建了一个新的关联数据摘要列表：
# sort into rows of associated data and convert to list
rows = zip(names, weights, costs, unit_costs)
summary = list(rows)
Once I had the new summary list, I proceeded to sort and print out the table to the user (however, I will deal with the formatting later):
有了新的摘要列表后，我开始对表格进行排序并将其打印给用户（但是，稍后我将处理格式）：
# Sort Alphabetically and print
summary.sort()
print()
print("*** Results shown below (alphabetically) ***")
print("Name\t\tWeight\tCost\tUnit Cost")
for item in summary:
print("")
for data in item:
print(data, "\t", end='')
output is as follows:
输出如下：
*** Results shown below (alphabetically) ***
Name Weight Cost Unit Cost
bar 0.05 2.0 40.0
chips 0.25 3.0 12.0
chocolate 0.1 5.0 50.0
Thanks to cdarke for the help :)
感谢 cdarke 的帮助:)
