# Cloudmesh Common
[](https://pypi.org/project/cloudmesh-common/)
[](https://pypi.python.org/pypi/cloudmesh-common)
[](https://github.com/cloudmesh/cloudmesh-common/blob/main/LICENSE)
[](https://pypi.python.org/pypi/cloudmesh-common)
[](https://pypi.python.org/pypi/cloudmesh-common)
[](https://travis-ci.com/cloudmesh/cloudmesh-common)
## Installation and Documentation
Please note that several packages are available which are pointed to in the
installation documentation.
| | Links |
|---------------|-------|
| Documentation | <https://cloudmesh.github.io/cloudmesh-cloud> |
| Code | <https://github.com/cloudmesh/cloudmesh-cloud> |
| Installation Instructions | <https://github.com/cloudmesh/get> |
## Highlighted features
This library contains a number of useful functions and APIs that we highlight
here. They are used to interact with the system and provide a number of
functions to implement command line programs and shells.
## Console
The console provides convenient way to print colored messages types in the
terminal, such as errors, info, and regular messages
* [cloudmesh.common.console](https://github.com/cloudmesh/cloudmesh-common/blob/main/cloudmesh/common/console.py)
```python
from cloudmesh.common.console import Console
Console.error("this is an error printed in red with prefix ERROR:")
Console.msg("this is a msg printed in black")
Console.ok("this is an ok message printed in green")
```
## Shell
We have lots of shell commands that call linux commands, but also have a
convenient execution command that returns the results in a string.
For more information we like you to inspect the source code:
* [cloudmesh.common.Shell](https://github.com/cloudmesh/cloudmesh-common/blob/main/cloudmesh/common/Shell.py)
```python
from cloudmesh.common.Shell import Shell
shell = Shell()
print(shell.terminal_type())
# prints after the command is finished
r = shell.execute('pwd')
print(r)
# prints while the command is executed
r = shell.live('pwd')
print(r)
# open a new terminal and start the command ls in it (for OSX and Gnome)
shell.terminal("ls")
# an example of a build in command
shell.pip("install cloudmesh-common")
```
We have many such build in commands, please see the source
## Printer
A convenient way to print dictionaries and lists with repeated
entries as tables, csv, json, yaml. The dictionaries can even be hierarchical.
* [cloudmesh.common.Printer](https://github.com/cloudmesh/cloudmesh-common/blob/main/cloudmesh/common/Printer.py)
Let us assume we have
```python
data = [
{
"name": "Gregor",
"address": {
"street": "Funny Lane 11",
"city": "Cloudville"
{
},
{
"name": "Albert",
"address": {
"street": "Memory Lane 1901",
"city": "Cloudnine"
}
}
]
```
Then we can print it nicely with
```python
print(Printer.flatwrite(self.data,
sort_keys=["name"],
order=["name", "address.street", "address.city"],
header=["Name", "Street", "City"],
output="table")
)
```
Other formats such as csv, json, dict are also supported.
In addition we have also printers for printing attribute lists. Please consult
the source code.
## StopWatch
See: https://colab.research.google.com/drive/1tG7IcP-XMQiNVxU05yazKQYciQ9GpMat#scrollTo=TZAjATZiQh4q&uniqifier=1 for an example
### Using Cloudmesh StopWatch Inline
```python
from cloudmesh.common.StopWatch import StopWatch
import time
StopWatch.start("a")
time.sleep(3)
StopWatch.stop("a")
StopWatch.status("a", True)
StopWatch.benchmark()
```
### Using Cloudmesh Benchmark wrapped in Functions
If it is not wrapped in functions, do not use it this way.
``` python
from cloudmesh.common.Benchmark import Benchmark
import time
def b():
Benchmark.Start()
time.sleep(3)
Benchmark.Stop()
def c():
Benchmark.Start()
time.sleep(1)
Benchmark.Stop()
b()
c()
Benchmark.print()
```
* See also: [cloudmesh.common.StopWatch](https://github.com/cloudmesh/cloudmesh-common/blob/main/cloudmesh/common/StopWatch.py)
## dotdict
* [cloudmesh.common.dotdict](https://github.com/cloudmesh/cloudmesh-common/blob/main/cloudmesh/common/dotdict.py)
One dimensional Dictionaries in dot format.
```python
from cloudmesh.common.dotdict import doctict
# convert a simple dict to a dotdict
d = dotdict({"name": "Gregor"})
# Now you can say
print(d["name"])
print(d.name)
```
## ssh
* [cloudmesh.common.ssh](https://github.com/cloudmesh/cloudmesh-common/blob/main/cloudmesh/common/ssh)
* managing ssh config files
* managing authorized keys
## util
Very useful functions are included in util
* [cloudmesh.common.util](https://github.com/cloudmesh/cloudmesh-common/blob/main/cloudmesh/common/util.py)
Especially useful are
* generating passwords
* banners
* yn_choices
* path_expansion
* grep (simple line matching)
* HEADING() which without parameter identifies the name of the function and
prints its name within a banner
## Changes
* added support for terminals with dark background
## Acknowledgments
Continued work was in part funded by the NSF
CyberTraining: CIC: CyberTraining for Students and Technologies
from Generation Z with the award numbers 1829704 and 2200409.
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"description": "# Cloudmesh Common\r\n\r\n\r\n[](https://pypi.org/project/cloudmesh-common/)\r\n[](https://pypi.python.org/pypi/cloudmesh-common)\r\n[](https://github.com/cloudmesh/cloudmesh-common/blob/main/LICENSE)\r\n[](https://pypi.python.org/pypi/cloudmesh-common)\r\n[](https://pypi.python.org/pypi/cloudmesh-common)\r\n[](https://travis-ci.com/cloudmesh/cloudmesh-common)\r\n\r\n \r\n## Installation and Documentation\r\n\r\nPlease note that several packages are available which are pointed to in the\r\ninstallation documentation.\r\n\r\n| | Links |\r\n|---------------|-------|\r\n| Documentation | <https://cloudmesh.github.io/cloudmesh-cloud> |\r\n| Code | <https://github.com/cloudmesh/cloudmesh-cloud> |\r\n| Installation Instructions | <https://github.com/cloudmesh/get> |\r\n\r\n## Highlighted features\r\n\r\nThis library contains a number of useful functions and APIs that we highlight\r\nhere. They are used to interact with the system and provide a number of\r\nfunctions to implement command line programs and shells.\r\n\r\n## Console\r\n\r\nThe console provides convenient way to print colored messages types in the\r\nterminal, such as errors, info, and regular messages\r\n\r\n* [cloudmesh.common.console](https://github.com/cloudmesh/cloudmesh-common/blob/main/cloudmesh/common/console.py)\r\n\r\n```python\r\nfrom cloudmesh.common.console import Console\r\n\r\nConsole.error(\"this is an error printed in red with prefix ERROR:\")\r\nConsole.msg(\"this is a msg printed in black\")\r\nConsole.ok(\"this is an ok message printed in green\")\r\n``` \r\n\r\n## Shell\r\n\r\nWe have lots of shell commands that call linux commands, but also have a\r\nconvenient execution command that returns the results in a string.\r\n\r\nFor more information we like you to inspect the source code:\r\n\r\n* [cloudmesh.common.Shell](https://github.com/cloudmesh/cloudmesh-common/blob/main/cloudmesh/common/Shell.py)\r\n\r\n\r\n```python\r\nfrom cloudmesh.common.Shell import Shell\r\n\r\nshell = Shell()\r\n\r\nprint(shell.terminal_type())\r\n\r\n# prints after the command is finished\r\nr = shell.execute('pwd') \r\nprint(r)\r\n\r\n# prints while the command is executed\r\nr = shell.live('pwd') \r\nprint(r)\r\n\r\n# open a new terminal and start the command ls in it (for OSX and Gnome)\r\nshell.terminal(\"ls\")\r\n\r\n# an example of a build in command\r\nshell.pip(\"install cloudmesh-common\")\r\n```\r\n \r\nWe have many such build in commands, please see the source\r\n\r\n \r\n## Printer\r\n\r\nA convenient way to print dictionaries and lists with repeated\r\nentries as tables, csv, json, yaml. The dictionaries can even be hierarchical.\r\n\r\n* [cloudmesh.common.Printer](https://github.com/cloudmesh/cloudmesh-common/blob/main/cloudmesh/common/Printer.py)\r\n\r\nLet us assume we have \r\n\r\n```python\r\ndata = [\r\n {\r\n \"name\": \"Gregor\",\r\n \"address\": {\r\n \"street\": \"Funny Lane 11\",\r\n \"city\": \"Cloudville\"\r\n {\r\n },\r\n {\r\n \"name\": \"Albert\",\r\n \"address\": {\r\n \"street\": \"Memory Lane 1901\",\r\n \"city\": \"Cloudnine\"\r\n }\r\n }\r\n]\r\n```\r\n\r\nThen we can print it nicely with \r\n\r\n```python\r\nprint(Printer.flatwrite(self.data,\r\n sort_keys=[\"name\"],\r\n order=[\"name\", \"address.street\", \"address.city\"],\r\n header=[\"Name\", \"Street\", \"City\"],\r\n output=\"table\")\r\n )\r\n```\r\n\r\nOther formats such as csv, json, dict are also supported.\r\n\r\nIn addition we have also printers for printing attribute lists. Please consult\r\nthe source code.\r\n\r\n## StopWatch\r\n\r\nSee: https://colab.research.google.com/drive/1tG7IcP-XMQiNVxU05yazKQYciQ9GpMat#scrollTo=TZAjATZiQh4q&uniqifier=1 for an example\r\n\r\n### Using Cloudmesh StopWatch Inline\r\n\r\n```python\r\nfrom cloudmesh.common.StopWatch import StopWatch\r\nimport time\r\n\r\nStopWatch.start(\"a\")\r\ntime.sleep(3)\r\nStopWatch.stop(\"a\")\r\nStopWatch.status(\"a\", True)\r\nStopWatch.benchmark()\r\n```\r\n\r\n### Using Cloudmesh Benchmark wrapped in Functions\r\n\r\nIf it is not wrapped in functions, do not use it this way.\r\n\r\n``` python\r\nfrom cloudmesh.common.Benchmark import Benchmark\r\nimport time\r\n \r\ndef b():\r\n Benchmark.Start()\r\n time.sleep(3)\r\n Benchmark.Stop()\r\n\r\ndef c():\r\n Benchmark.Start()\r\n time.sleep(1)\r\n Benchmark.Stop()\r\n\r\n b()\r\n c()\r\n\r\nBenchmark.print()\r\n```\r\n\r\n* See also: [cloudmesh.common.StopWatch](https://github.com/cloudmesh/cloudmesh-common/blob/main/cloudmesh/common/StopWatch.py)\r\n\r\n \r\n\r\n## dotdict\r\n\r\n\r\n* [cloudmesh.common.dotdict](https://github.com/cloudmesh/cloudmesh-common/blob/main/cloudmesh/common/dotdict.py)\r\n\r\nOne dimensional Dictionaries in dot format. \r\n\r\n```python\r\nfrom cloudmesh.common.dotdict import doctict\r\n\r\n# convert a simple dict to a dotdict\r\nd = dotdict({\"name\": \"Gregor\"})\r\n# Now you can say\r\nprint(d[\"name\"])\r\nprint(d.name)\r\n```\r\n\r\n## ssh\r\n\r\n* [cloudmesh.common.ssh](https://github.com/cloudmesh/cloudmesh-common/blob/main/cloudmesh/common/ssh)\r\n\r\n * managing ssh config files\r\n * managing authorized keys\r\n\r\n## util\r\n\r\nVery useful functions are included in util\r\n\r\n\r\n* [cloudmesh.common.util](https://github.com/cloudmesh/cloudmesh-common/blob/main/cloudmesh/common/util.py)\r\n\r\nEspecially useful are\r\n\r\n * generating passwords\r\n * banners\r\n * yn_choices\r\n * path_expansion\r\n * grep (simple line matching)\r\n * HEADING() which without parameter identifies the name of the function and \r\n prints its name within a banner\r\n\r\n## Changes\r\n\r\n* added support for terminals with dark background\r\n\r\n## Acknowledgments\r\n\r\nContinued work was in part funded by the NSF\r\nCyberTraining: CIC: CyberTraining for Students and Technologies\r\nfrom Generation Z with the award numbers 1829704 and 2200409.\r\n",
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