Question

如何使用打印格式在两个对象之间放置一组字符（点前导）？

例如，我有以下代码：

os.chdir( "LOGS\\" )
for file in glob.glob('*'):
    with open(file) as f:
        contents = f.read()
    if 'HOST_POWER="ON"' in contents:
        print('{0:38} {1:3}'.format(file[:-4]," = ON"))

for file in glob.glob('*'):
    with open(file) as f:
        contents = f.read()
    if 'HOST_POWER="OFF"' in contents:
        print('{0:38} {1:3}'.format(file[:-4]," = OFF"))

输出：

server1.web.com          = ON
server2.web.com          = ON
server3334.web.com       = OFF
server5332223.web.com    = ON
server2233.web.com       = ON
server44.web.com         = ON
server1133333.web.com    = OFF

但我希望输出看起来像这样：

server1.web.com ............ ON
server2.web.com ............ ON
server3334.web.com ......... OFF
server5332223.web.com ...... ON
server2233.web.com ......... ON
server44.web.com ........... ON
server1133333.web.com ...... OFF

服务器{SPACE} ............ {SPACE} ON

服务器{SPACE} ............ {SPACE} OFF

Answer 1

您可以在将字符串传递给print之前编辑该字符串（编辑后可以获得所需的格式）：

import glob

def padStr( x, n ):
    x += ' '
    return x + '.'*(n - len(x) )

for file in glob.glob('*.*'):
    with open(file) as f:
        contents = f.read()
    if 'HOST_POWER="OFF"' in contents:
        print('%s %s' % ( padStr(file[:-4], 38 ),"ON"))

for file in glob.glob('*'):
    with open(file) as f:
        contents = f.read()
    if 'HOST_POWER="OFF"' in contents:
        print('%s %s' % ( padStr(file[:-4], 38 ),"OFF"))

输出：

blahblahblah ......................... ON
f1 ................................... ON
tes .................................. OFF

Answer 2

另一个（稍微麻烦）选项是在将字符串用作格式arg之前将其固定在行中：

print('{0} {1:3}'.format((f[:-4]+' ').ljust(38, '.'),"= ON"))

带有点头的Python打印格式

2 个答案: