import sys

commands = {}
args = []
kwargs = {}


def EXIT(msg, code=1):
    print(msg)
    sys.exit(code)

def command(fn):
    commands[fn.__name__] = fn
    return fn


def run():
    if len(sys.argv) < 2:
        EXIT('No command provided')

    cmd = sys.argv[1]

    if cmd not in commands:
        EXIT('Unkown command')

    args = [x for x in sys.argv[2:] if '=' not in x]
    kwargs = dict([x.split('=') for x in sys.argv[2:] if '=' in x])
    kwargs = dict([(k.replace('-', ''),v) for k,v in kwargs.items()])

    commands[cmd](*args, **kwargs)

import sys

commands = {}
args = []
kwargs = {}


def EXIT(msg, code=1):
    print(msg)
    sys.exit(code)

def command(fn):
    commands[fn.__name__] = fn
    return fn


def run():
    if len(sys.argv) < 2:
        EXIT('Valid commands are:\n ' + '\n '.join(commands))

    cmd = sys.argv[1]

    if cmd not in commands:
        EXIT('Unkown command')

    args = [x for x in sys.argv[2:] if '=' not in x]
    kwargs = dict([x.split('=') for x in sys.argv[2:] if '=' in x])
    kwargs = dict([(k.replace('-', ''),v) for k,v in kwargs.items()])

    commands[cmd](*args, **kwargs)

Add a helpful message if no command given
Add a helpful message if no command given

  import sys
  
  commands = {}
  args = []
  kwargs = {}
  
  
  def EXIT(msg, code=1):
      print(msg)
      sys.exit(code)
  
  def command(fn):
      commands[fn.__name__] = fn
      return fn
  
  
  def run():
      if len(sys.argv) < 2:
-         EXIT('No command provided')
+         EXIT('Valid commands are:\n ' + '\n '.join(commands))
  
      cmd = sys.argv[1]
  
      if cmd not in commands:
          EXIT('Unkown command')
  
      args = [x for x in sys.argv[2:] if '=' not in x]
      kwargs = dict([x.split('=') for x in sys.argv[2:] if '=' in x])
      kwargs = dict([(k.replace('-', ''),v) for k,v in kwargs.items()])
  
      commands[cmd](*args, **kwargs)
  
Add a helpful message if no command given
## Code Before:
import sys

commands = {}
args = []
kwargs = {}


def EXIT(msg, code=1):
    print(msg)
    sys.exit(code)

def command(fn):
    commands[fn.__name__] = fn
    return fn


def run():
    if len(sys.argv) < 2:
        EXIT('No command provided')

    cmd = sys.argv[1]

    if cmd not in commands:
        EXIT('Unkown command')

    args = [x for x in sys.argv[2:] if '=' not in x]
    kwargs = dict([x.split('=') for x in sys.argv[2:] if '=' in x])
    kwargs = dict([(k.replace('-', ''),v) for k,v in kwargs.items()])

    commands[cmd](*args, **kwargs)

## Instruction:
Add a helpful message if no command given
## Code After:
import sys

commands = {}
args = []
kwargs = {}


def EXIT(msg, code=1):
    print(msg)
    sys.exit(code)

def command(fn):
    commands[fn.__name__] = fn
    return fn


def run():
    if len(sys.argv) < 2:
        EXIT('Valid commands are:\n ' + '\n '.join(commands))

    cmd = sys.argv[1]

    if cmd not in commands:
        EXIT('Unkown command')

    args = [x for x in sys.argv[2:] if '=' not in x]
    kwargs = dict([x.split('=') for x in sys.argv[2:] if '=' in x])
    kwargs = dict([(k.replace('-', ''),v) for k,v in kwargs.items()])

    commands[cmd](*args, **kwargs)
