Cron wont import pandas module to execute python script. ```ImportError: No module named pandas```

Question

我使用的是 xubuntu 18.01

我有一个 python 程序可以抓取天气数据并将文件保存为 csv。在我使用 chmod +x weatherdata.

授予它权限后，它完美地运行在终端中执行命令 weatherdata

我希望使用 cron 每 2 周运行。但是我设置后没有任何反应

我正在使用 NANO cron 编辑器

我已经尝试设置 cronjob PATH 变量，SHELL=/bin/bash/。 P 把/bin/bash放在命令前面...都无济于事....

# crontab -e
SHELL=/bin/bash
MAILTO= mygmail@gmail.com (removed my actual email for privacy)
PATH=/home/luke/bin/
# Edit this file to introduce tasks to be run by cron.
# 
# Each task to run has to be defined through a single line
# indicating with different fields when the task will be run
# and what command to run for the task
# 
# To define the time you can provide concrete values for
# minute (m), hour (h), day of month (dom), month (mon),
# and day of week (dow) or use '*' in these fields (for 'any').# 
# Notice that tasks will be started based on the cron's system
# daemon's notion of time and timezones.
# 
# Output of the crontab jobs (including errors) is sent through
# email to the user the crontab file belongs to (unless redirected).
# 
# For example, you can run a backup of all your user accounts
# at 5 a.m every week with:
# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
# 
# For more information see the manual pages of crontab(5) and cron(8)
# 
# m h  dom mon dow   command


34 * * * * /bin/bash /home/luke/bin/weatherdata

我预计 weatherdata python 文件会在整点后 34 分钟每小时执行一次。

没有任何反应，我没有收到电子邮件或任何东西。

编辑：

我把top改成了

SHELL=/bin/bash
#MAILTO=mygmail@gmail.com (commented it out)
PATH=/home/luke/bin/:/usr/sbin:/usr/bin:/sbin:/bin

我在运行ning 之后得到了什么： 15 * * * * /bin/bash /home/luke/bin/weatherdata > /tmp/weatherlog 2>&1 正如评论中所建议的那样。

Traceback (most recent call last):
  File "/home/luke/Documents/Duka/Master_River_Levels_LOOP.py", line 9, in <module>
    import pandas as pd
ImportError: No module named pandas
Traceback (most recent call last):
  File "/home/luke/Documents/Duka/Temp_Mean_Weather_loop.py", line 9, in <module>
    import pandas as pd
ImportError: No module named pandas

我需要为 python 脚本导入一些模块到运行，第一个是 panadas。

Answer 1

crontab -e 作业看起来不错。

为什么不直接使用：

34 * * * * /home/luke/bin/weatherdata

或者设置一个 sh 文件...例如。 myfile.sh

#!/usr/local/env bash
/home/luke/bin/weatherdata

然后crontab -e读取

34 * * * * /home/luke/myfile.sh

除非您的系统管理员阻止它，否则 Cron 可以实现梦想。

Answer 2

正如@thatotherguy 所说，问题出在我的路径上。

1) 我在终端运行 echo $PATH 回来了：

/home/luke/anaconda3/bin:/home/luke/anaconda3/condabin:/home/luke/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

2) 我复制并粘贴上面的路径来替换： PATH=/home/luke/bin/:/usr/sbin:/usr/bin:/sbin:/bin 和

PATH=/home/luke/anaconda3/bin:/home/luke/anaconda3/condabin:/home/luke/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

3) 我把PATH=/改成了PATH=$PATH:/

现在 cronjob 执行得很好。

Cron wont import pandas module to execute python script. ```ImportError: No module named pandas```

Cron wont import pandas module to execute python script. ```ImportError: No module named pandas```

bash

cron

cron-task

python-3.x