将文档字符串中的行保持在 79 个字符以内

Question

我正在我的模块中编写一些文档测试。

相关代码

def foo():
    """
    Populates the database with 'VALUES'

    >>> import sqlite3
    >>> con = sqlite3.connect('test.db')
    >>> cur = con.cursor()
    >>> cur.execute('select * from users').fetchall()
    [('admin', 'Admin', 1, 'admin123'), \
    ('foo', 'bar', 2, 'foo123'), \
    ('john', 'doe', 3, 'john123')]
    >>> 

    """

    try:
        con = sqlite3.connect('test.db')
        cursor = con.cursor()
        cursor.executemany("INSERT INTO users VALUES (?, ?, ?, ?)", VALUES)
        connection.commit()
        connection.close()
    except sqlite3.OperationalError as msg:
        return msg

我面临的问题

$ python -m doctest test_db.py
Failed example:
    cur.execute('select * from users').fetchall()
Expected:
    [('admin', 'Admin', 1, 'admin123'),     ('foo', 'bar', 2, 'foo123'),     ('john', 'doe', 3, 'john123')]
Got:
    [('admin', 'Admin', 1, 'admin123'), ('foo', 'bar', 2, 'foo123'), ('john', 'doe', 3, 'john123')]
**********************************************************************

参考文献

我查看了这些，但找不到相关的内容

• https://www.python.org/dev/peps/pep-0257/
• How Do I Keep Python Code Under 80 Chars Without Making It Ugly?

Answer 1

尝试删除多余的空格。

def foo():
    """
    Populates the database with 'VALUES'

    >>> import sqlite3
    >>> con = sqlite3.connect('test.db')
    >>> cur = con.cursor()
    >>> cur.execute('select * from users').fetchall()
    [('admin', 'Admin', 1, 'admin123'), \
('foo', 'bar', 2, 'foo123'), \
('john', 'doe', 3, 'john123')]
    >>> 

    """