我正在尝试使用这个巧妙的技巧 here使用 csv 文件。不过,我似乎无法在 python3 中使用自动完成功能。我不知道从哪里开始阅读线。文档有点密集。我的猜测是,如果没有来自 Python 2 的 raw_input()
,我会遗漏一些东西。
我在下面粘贴了我的尝试。当我在 shell 中并点击制表符时,我只会得到大制表符而没有自动完成操作。我的意图是下面的输入语句自动完成字符串 ['10/10/2013', '10/13/2013', '10/14/2013', '10/15/2013']
。
我错过了什么?
import readline
class MyCompleter(object): # Custom completer
def __init__(self, options):
self.options = sorted(options)
def complete(self, text, state):
if state == 0: # on first trigger, build possible matches
if text: # cache matches (entries that start with entered text)
self.matches = [s for s in self.options
if s and s.startswith(text)]
else: # no text entered, all matches possible
self.matches = self.options[:]
# return match indexed by state
try:
return self.matches[state]
except IndexError:
return None
dates = [
'10/10/2013 13:03:51',
'10/10/2013 13:54:32',
'10/10/2013 18:48:48',
'10/10/2013 19:13:00',
'10/13/2013 12:58:17',
'10/13/2013 13:38:15',
'10/13/2013 16:48:58',
'10/13/2013 17:23:59',
'10/13/2013 20:09:56',
'10/13/2013 21:54:14',
'10/13/2013 21:57:43',
'10/13/2013 22:47:40',
'10/14/2013 13:32:53',
'10/14/2013 21:14:51',
'10/15/2013 10:18:23'
]
dates = [x.split(' ')[0] for x in dates]
completer = MyCompleter(list(set(dates)))
readline.set_completer(completer.complete)
readline.parse_and_bind('tab: complete')
date = input('Enter a date in m/d/yy format\n\t')
更新:下面的答案很好,但在 OS X 上对我来说仍然很糟糕。我什至不知道从哪里开始解决这个问题。我在 Ubuntu 上自动完成了这个,但它没有以某种方式绑定(bind)到我的 OS X 系统上的 tab
。
最佳答案
更正版本:
from __future__ import print_function
import sys
import readline
from os import environ
class MyCompleter(object): # Custom completer
def __init__(self, options):
self.options = sorted(options)
def complete(self, text, state):
if state == 0: # on first trigger, build possible matches
if not text:
self.matches = self.options[:]
else:
self.matches = [s for s in self.options
if s and s.startswith(text)]
# return match indexed by state
try:
return self.matches[state]
except IndexError:
return None
def display_matches(self, substitution, matches, longest_match_length):
line_buffer = readline.get_line_buffer()
columns = environ.get("COLUMNS", 80)
print()
tpl = "{:<" + str(int(max(map(len, matches)) * 1.2)) + "}"
buffer = ""
for match in matches:
match = tpl.format(match[len(substitution):])
if len(buffer + match) > columns:
print(buffer)
buffer = ""
buffer += match
if buffer:
print(buffer)
print("> ", end="")
print(line_buffer, end="")
sys.stdout.flush()
dates = [
'10/10/2013 13:03:51',
'10/10/2013 13:54:32',
'10/10/2013 18:48:48',
'10/10/2013 19:13:00',
'10/13/2013 12:58:17',
'10/13/2013 13:38:15',
'10/13/2013 16:48:58',
'10/13/2013 17:23:59',
'10/13/2013 20:09:56',
'10/13/2013 21:54:14',
'10/13/2013 21:57:43',
'10/13/2013 22:47:40',
'10/14/2013 13:32:53',
'10/14/2013 21:14:51',
'10/15/2013 10:18:23'
]
dates = [x.split(' ')[0] for x in dates]
completer = MyCompleter(list(set(dates)))
readline.set_completer_delims(' \t\n;')
readline.set_completer(completer.complete)
readline.parse_and_bind('tab: complete')
readline.set_completion_display_matches_hook(completer.display_matches)
print('Enter a date in m/d/yy format\n\t')
date = input("> ")
注释:
- 添加了自定义
display_matches()
(可能对您没用) - 添加了
readline.set_completer_delims()
调用,因为我们希望将/
视为单词的一部分。
在 Mac OS X 上的 Python-3.3 上测试
关于python - 在 python3 中使用 readline 自动完成,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/20625642/