Python 属性错误：'；str'；对象没有属性'；格式'；：Crontab错误

我有一个每天00:00 GMT运行的cronjob集。此cronjob执行一个shell脚本，该脚本在内部调用python脚本。python脚本生成一个日志文件作为输出。shell脚本和python脚本位于unix框中的同一目录中（/abc/logs/env/pqr/hvi/）。他们有777权限。现在，当我从这个位置（/abc/logs/env/pqr/hvi/）运行shell脚本时，它执行得很好，python脚本在内部被调用并生成日志文件。但是当通过cronjob执行此操作时，不会生成输出文件，我会收到一条错误消息说“AttributeError:'str'对象没有属性'format'” 当我做一个时，我得到的是：somelocation/./thirdparty/python/2.6/bin/python 所以我想我使用的是python 2.6，它支持.format操作。 我的猜测是：

Python解释器问题，我在cronjob中添加了以下内容：

PYTHONPATH=/../../../../thirdparty/python/2.6/bin/python 路径=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin

但是没有运气

Python版本问题，因为它可能不支持datetime的“.format”函数。但我想我使用的是Python2.6（Python显示的是2.6）&它支持datetime的这个函数

不知道问题出在哪里。有人能帮忙吗？ 提前谢谢

Cron作业看起来像：

PYTHONPATH =/cs/../../thirdparty/python/2.6/bin/python
PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin
00 00 * * 2,3,4,5,6  /abc/logs/env/pqr/hvi/calculate_latency.sh  > /var/tmp/hvi_latency.log 2>&1

#!/usr/bin/ksh
cd /abc/logs/env/pqr/hvi/
NOW=$(date +"%F")
FILE="hvi-latency-$NOW.log"
zgrep "Received message:" $(date -d '-2 day' '+%Y%m%d')*.hvi.data.log.gz $(date -d'yesterday' +%Y%m%d)/*.data.* | cut -d' ' -f1,2,20,21,22 | sed 's/2016.*gz://' | sed 's/ /|/2'  > $FILE
chmod 777 $FILE
python /abc/logs/env/pqr/hvi/HVI_Delay_analyizer_BY_HOUR_usingDatetime.py $FILE /abc/logs/env/pqr/hvi/
chmod 777 HVI_MaxDelayPerHOUR.log
cut -d "|" -f2 HVI_MaxDelayPerHOUR.log >HVI_MaxDelay.log
chmod 777 HVI_MaxDelay.log
tail -n +2 HVI_MaxDelay.log > HVI_Latency.log
chmod 777 HVI_Latency.log
cat HVI_Latency.log > HVI_Latency.txt
chmod 777 HVI_Latency.txt
mail -s "DR Latency values for HVI feeder on date:$NOW" sajida.sayyad@gmail.com < HVI_Latency.txt

import os
import sys
import time
import math
import re
from datetime import datetime
from datetime import timedelta

def get_timestamp():
import datetime
n = datetime.datetime.now()
# print n gives : 2016-03-25 04:08:43.123162
result = '{0:04}-{1:02}-{2:02}_{3:02}{4:02}{5:02}'.format(n.year,n.month,n.day,n.hour,n.minute,n.second)
# print result gives :2016-03-25_040843
return result

[..... tmp]$ tail -100 hvi_latency.log 
2016-03-25 05:31:43.806450
Traceback (most recent call last):
File "/abc/logs/env/pqr/hvi/HVI_Delay_analyizer_BY_HOUR_usingDatetime.py", line 119, in ?
START_TIME = get_timestamp()   
File "/abc/logs/env/pqr/hvi/HVI_Delay_analyizer_BY_HOUR_usingDatetime.py", line 18, in get_timestamp
result = '{0:04}-{1:02}-{2:02}_{3:02}{4:02}{5:02}'.format(n.year,n.month,n.day,n.hour,n.minute,n.second)
AttributeError: 'str' object has no attribute 'format'

Shell脚本看起来像：

PYTHONPATH =/cs/../../thirdparty/python/2.6/bin/python
PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin
00 00 * * 2,3,4,5,6  /abc/logs/env/pqr/hvi/calculate_latency.sh  > /var/tmp/hvi_latency.log 2>&1

#!/usr/bin/ksh
cd /abc/logs/env/pqr/hvi/
NOW=$(date +"%F")
FILE="hvi-latency-$NOW.log"
zgrep "Received message:" $(date -d '-2 day' '+%Y%m%d')*.hvi.data.log.gz $(date -d'yesterday' +%Y%m%d)/*.data.* | cut -d' ' -f1,2,20,21,22 | sed 's/2016.*gz://' | sed 's/ /|/2'  > $FILE
chmod 777 $FILE
python /abc/logs/env/pqr/hvi/HVI_Delay_analyizer_BY_HOUR_usingDatetime.py $FILE /abc/logs/env/pqr/hvi/
chmod 777 HVI_MaxDelayPerHOUR.log
cut -d "|" -f2 HVI_MaxDelayPerHOUR.log >HVI_MaxDelay.log
chmod 777 HVI_MaxDelay.log
tail -n +2 HVI_MaxDelay.log > HVI_Latency.log
chmod 777 HVI_Latency.log
cat HVI_Latency.log > HVI_Latency.txt
chmod 777 HVI_Latency.txt
mail -s "DR Latency values for HVI feeder on date:$NOW" sajida.sayyad@gmail.com < HVI_Latency.txt

import os
import sys
import time
import math
import re
from datetime import datetime
from datetime import timedelta

def get_timestamp():
import datetime
n = datetime.datetime.now()
# print n gives : 2016-03-25 04:08:43.123162
result = '{0:04}-{1:02}-{2:02}_{3:02}{4:02}{5:02}'.format(n.year,n.month,n.day,n.hour,n.minute,n.second)
# print result gives :2016-03-25_040843
return result

[..... tmp]$ tail -100 hvi_latency.log 
2016-03-25 05:31:43.806450
Traceback (most recent call last):
File "/abc/logs/env/pqr/hvi/HVI_Delay_analyizer_BY_HOUR_usingDatetime.py", line 119, in ?
START_TIME = get_timestamp()   
File "/abc/logs/env/pqr/hvi/HVI_Delay_analyizer_BY_HOUR_usingDatetime.py", line 18, in get_timestamp
result = '{0:04}-{1:02}-{2:02}_{3:02}{4:02}{5:02}'.format(n.year,n.month,n.day,n.hour,n.minute,n.second)
AttributeError: 'str' object has no attribute 'format'

错误消息是：

PYTHONPATH =/cs/../../thirdparty/python/2.6/bin/python
PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin
00 00 * * 2,3,4,5,6  /abc/logs/env/pqr/hvi/calculate_latency.sh  > /var/tmp/hvi_latency.log 2>&1

#!/usr/bin/ksh
cd /abc/logs/env/pqr/hvi/
NOW=$(date +"%F")
FILE="hvi-latency-$NOW.log"
zgrep "Received message:" $(date -d '-2 day' '+%Y%m%d')*.hvi.data.log.gz $(date -d'yesterday' +%Y%m%d)/*.data.* | cut -d' ' -f1,2,20,21,22 | sed 's/2016.*gz://' | sed 's/ /|/2'  > $FILE
chmod 777 $FILE
python /abc/logs/env/pqr/hvi/HVI_Delay_analyizer_BY_HOUR_usingDatetime.py $FILE /abc/logs/env/pqr/hvi/
chmod 777 HVI_MaxDelayPerHOUR.log
cut -d "|" -f2 HVI_MaxDelayPerHOUR.log >HVI_MaxDelay.log
chmod 777 HVI_MaxDelay.log
tail -n +2 HVI_MaxDelay.log > HVI_Latency.log
chmod 777 HVI_Latency.log
cat HVI_Latency.log > HVI_Latency.txt
chmod 777 HVI_Latency.txt
mail -s "DR Latency values for HVI feeder on date:$NOW" sajida.sayyad@gmail.com < HVI_Latency.txt

import os
import sys
import time
import math
import re
from datetime import datetime
from datetime import timedelta

def get_timestamp():
import datetime
n = datetime.datetime.now()
# print n gives : 2016-03-25 04:08:43.123162
result = '{0:04}-{1:02}-{2:02}_{3:02}{4:02}{5:02}'.format(n.year,n.month,n.day,n.hour,n.minute,n.second)
# print result gives :2016-03-25_040843
return result

[..... tmp]$ tail -100 hvi_latency.log 
2016-03-25 05:31:43.806450
Traceback (most recent call last):
File "/abc/logs/env/pqr/hvi/HVI_Delay_analyizer_BY_HOUR_usingDatetime.py", line 119, in ?
START_TIME = get_timestamp()   
File "/abc/logs/env/pqr/hvi/HVI_Delay_analyizer_BY_HOUR_usingDatetime.py", line 18, in get_timestamp
result = '{0:04}-{1:02}-{2:02}_{3:02}{4:02}{5:02}'.format(n.year,n.month,n.day,n.hour,n.minute,n.second)
AttributeError: 'str' object has no attribute 'format'

---

将

somelocation/./thirdparty/python/2.6/bin

放在路径的左侧-在cron作业中永远不要使用相对路径名，始终使用绝对路径。当您说将.././bin放在路径的左侧是什么意思？我将路径更改为：PATH=/xyz/def/thirdparty/python/2.6/bin/python:/usr/bin:/usr/bin:/usr/sbin:/usr/local/bin。仍然会收到上面提到的相同错误。在调用之前将

哪个python

放入shell脚本。将

打印目录（“”）

就在失败语句之前。在控制台中启动python并键入

''.format

。您得到了什么？我看到

PYTHONPATH

的

=

前面有一个可疑的空白。不要使用

/usr/bin/env

，这将得到与依赖

$PATH

相同的python，请在

#！

。我知道很多人说要使用

env

，但这恰恰说明了这些问题（以及其他问题）。