processcall 1.1.0

a simple subprocess manager,suport stream stdout \ async

### 介绍

一个subprocess模块的封装,可以更方便的进行系统调用

To Do List:
....

[开发processcall的环境是python3哦]

### 安装

pip安装
```
pip install processcall
```

源码安装
```
git clone [e-mail]:rfyiamcool/processcall.git
cd processcall
python setup.py install
```

### 使用方法

只单纯的执行，然后返回linux run code和执行状态

```
>>> import processcall
>>> r = processcall.run('uptime')
04:06:37 up 2 min, 1 user, load average: 0.20, 0.19, 0.08
>>> r.output
>>> r.success
True
>>> r.retcode
0
```

捕捉所有的执行结果
```
>>> r = processcall.run_capture('uptime')
>>> r.output
' 04:07:16 up 2 min, 1 user, load average: 0.11, 0.17, 0.08\n'
>>> r.success
True
>>> r.retcode
0
```

把输出的结果精简过,maxlines是控制行数
```
print(run_capture_limited('ls', maxlines=2).output)
```

processcall example usage:

```
from processcall import run_capture

r = run_capture('ls -la')
if r.success:
print(r.output)
else:
print("Error: '%s' exit code %s" % (r.command, r.retcode))
print(" ...")
# print last three lines of output
for line in r.output.splitlines()[-3:]:
print(" %s" % line)
```