在Python中打印格式正确的SQLite表

Printing a properly formatted SQLite table in Python

我编写了一个python脚本来向我的表中添加行。我决定，如果我也可以使用相同的脚本查看我的表，而不必退出脚本并运行sqlite3，或者切换到另一个shell并运行sqlite3，那就更好了。所以我写下了我所期望的会给我我想要的东西，它有点…这是相关脚本的一部分：

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import sqlite3

conn = sqlite3.connect('stu.db')
c = conn.cursor()

var = 1
while var == 1:

enquiry = raw_input("What would you like to do?>")

enquiry == 'stu db' or enquiry == 'sd':
c.execute("SELECT * FROM stu")
conn.commit

在sqlite3中，当您运行select*from stu时，会得到一个格式良好的表，其中有统一的行和列。当我在这里运行它时，我会得到一个长的信息列表，在括号中。看起来有点像这样(我没有打印实际结果，因为这违反了一些联邦法律)：

我想我知道发生了什么事。python只是在吐出查询返回到sqlite的内容，但是有没有一种方法来格式化这些信息，使其易于阅读？

相关讨论

您可以使用pandas进行以下操作：

1	print pd.read_sql_query("SELECT * FROM stu", conn)

示例程序(python 2.7.6，pandas 0.18.0)：

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import sqlite3
import pandas as pd

conn = sqlite3.connect(':memory:')
c = conn.cursor()

c.execute('create table stu ( ID, Name, ShoeSize, Course, IQ, Partner )')
conn.commit()
c.executemany('insert into stu VALUES (?, ?, ?, ?, ?, ?)',
[(1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None),
(1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None),
(1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None),
(1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None),
(1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None),
(1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None),
(1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None),
(1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None),
(1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None),
(1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None)])
conn.commit()

# Ugly way
print list(c.execute("SELECT * FROM stu"))

# Pretty way
print pd.read_sql_query("SELECT * FROM stu", conn)

结果，包括丑陋和美丽的输出：

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[(1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None), (1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None), (1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None), (1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None), (1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None), (1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None), (1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None), (1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None), (1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None), (1234567890, u'John Doe', 3852, u'DEGR-AA', 4, None)]
ID Name ShoeSize Course IQ Partner
0 1234567890 John Doe 3852 DEGR-AA 4 None
1 1234567890 John Doe 3852 DEGR-AA 4 None
2 1234567890 John Doe 3852 DEGR-AA 4 None
3 1234567890 John Doe 3852 DEGR-AA 4 None
4 1234567890 John Doe 3852 DEGR-AA 4 None
5 1234567890 John Doe 3852 DEGR-AA 4 None
6 1234567890 John Doe 3852 DEGR-AA 4 None
7 1234567890 John Doe 3852 DEGR-AA 4 None
8 1234567890 John Doe 3852 DEGR-AA 4 None
9 1234567890 John Doe 3852 DEGR-AA 4 None