以下代码在'ipython qtconsole'中打印'我想要打印',但它不能在普通的IPython中打印。
import logging
import logging.handlers
log = logging.getLogger()
f = logging.Formatter("%(asctime)s - %(module)s. %(funcName)s - %(levelname)s - %(message)s")
fh = logging.handlers.TimedRotatingFileHandler('log.txt', 'W6')
fh.setFormatter(f)
log.addHandler(fh)
log.setLevel(logging.INFO)
log.info('I want this to print')
在'IPython qtconsole'中,我遇到了不同的问题,我试图解释here(这种情况不太好,不需要阅读!)。
你能告诉我为什么吗?
编辑:我使用的是Python 2.7
EDIT2:也许我真的只需要添加logging.StreamHandler。
答案 0 :(得分:22)
似乎qtconsole
为root
记录器添加了一个处理程序:
In [1]: import logging
...: root = logging.getLogger()
...: root.handlers
...:
Out[1]: [<logging.StreamHandler at 0x7fd8e00e1f98>]
使用普通的python解释器或只使用ipython
:
In [1]: import logging
In [2]: root = logging.getLogger()
In [3]: root.handlers
Out[3]: []
如果您希望两者的行为相同,则应向正常StreamHandler
的根记录器添加ipython
,或从qtconsole解释器中删除StreamHandler
。
如果你想要前者只需添加:
root = logging.getLogger()
root.addHandler(logging.StreamHandler())
如果你想要后者,在添加你自己的处理程序之前,请执行:
for handler in root.handlers[:]:
root.removeHandler(handler)
请注意,IPython已经提供了一些用于记录文件的机制。见the documentation。如果你只想在ipython中使用它的魔法可能会更简单。
答案 1 :(得分:2)
如果您使用Bakuriu的后一种解决方案,如果root有多个处理程序,由于迭代时删除问题,它将无法正常工作。
改为使用:
while len(root.handlers):
root.removeHandler(root.handlers[0])
答案 2 :(得分:2)
什么对我有用
在任何其他库/代码之前导入记录器,在单独的单元格中。这实际上是主要要求。如果我在一个单元格中加载日志记录和其他库,则无论该单元格中的层次结构是什么,日志记录都不起作用
<?php
$time_start = microtime(true);
$healthy = array("fruits", "vegetables", "fiber");
$yummy = array("pizza", "beer", "ice cream");
for($i=0;$i<=1000000;$i++){
// Method 1
$phrase = "You should eat fruits, vegetables, and fiber every day.";
$phrase = str_replace($healthy, $yummy, $phrase);
}
$time_end = microtime(true);
$time = $time_end - $time_start;
echo "Did Test 1 in ($time seconds)". PHP_EOL. PHP_EOL;
$time_start = microtime(true);
for($i=0;$i<=1000000;$i++){
// Method2
$phrase = "You should eat fruits, vegetables, and fiber every day.";
$phrase = str_replace("fruits", "pizza", $phrase);
$phrase = str_replace("vegetables", "beer", $phrase);
$phrase = str_replace("fiber", "ice cream", $phrase);
}
$time_end = microtime(true);
$time = $time_end - $time_start;
echo "Did Test 2 in ($time seconds)" . PHP_EOL. PHP_EOL;
$time_start = microtime(true);
for($i=0;$i<=1000000;$i++){
$a = $healthy;
$b = $yummy;
foreach ($healthy as $k => $v) {
if (strpos($phrase, $healthy[$k]) === FALSE)
unset($a[$k], $b[$k]);
}
if ($a) $new_str = str_replace($a, $b, $phrase);
}
$time_end = microtime(true);
$time = $time_end - $time_start;
echo "Did Test 3 in ($time seconds)". PHP_EOL. PHP_EOL;
$time_start = microtime(true);
for($i=0;$i<=1000000;$i++){
$ree = false;
foreach ($healthy as $k) {
if (strpos($phrase, $k) !== FALSE) { //something to replace
$ree = true;
break;
}
}
if ($ree === true) {
$new_str = str_replace($healthy, $yummy, $phrase);
}
}
$time_end = microtime(true);
$time = $time_end - $time_start;
echo "Did Test 4 in ($time seconds)". PHP_EOL. PHP_EOL;
只有在加载库后我才设置日志配置以避免打印pyspark load debug
import logging
reload(logging)
logger = logging.getLogger(__name__)