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1 | """ A minimal application using the ZMQ-based terminal IPython frontend. |
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1 | """ A minimal application using the ZMQ-based terminal IPython frontend. | |
2 |
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2 | |||
3 | This is not a complete console app, as subprocess will not be able to receive |
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3 | This is not a complete console app, as subprocess will not be able to receive | |
4 | input, there is no real readline support, among other limitations. |
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4 | input, there is no real readline support, among other limitations. | |
5 |
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5 | |||
6 | Authors: |
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6 | Authors: | |
7 |
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7 | |||
8 | * Min RK |
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8 | * Min RK | |
9 | * Paul Ivanov |
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9 | * Paul Ivanov | |
10 |
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10 | |||
11 | """ |
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11 | """ | |
12 |
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12 | |||
13 | #----------------------------------------------------------------------------- |
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13 | #----------------------------------------------------------------------------- | |
14 | # Imports |
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14 | # Imports | |
15 | #----------------------------------------------------------------------------- |
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15 | #----------------------------------------------------------------------------- | |
16 | import signal |
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16 | import signal | |
17 | import sys |
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17 | import sys | |
18 | import time |
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18 | import time | |
19 |
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19 | |||
20 | from IPython.frontend.terminal.ipapp import TerminalIPythonApp |
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20 | from IPython.frontend.terminal.ipapp import TerminalIPythonApp | |
21 |
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21 | |||
22 | from IPython.utils.traitlets import ( |
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22 | from IPython.utils.traitlets import ( | |
23 | Dict, List, Unicode, Int, CaselessStrEnum, CBool, Any |
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23 | Dict, List, Unicode, Int, CaselessStrEnum, CBool, Any | |
24 | ) |
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24 | ) | |
25 | from IPython.zmq.ipkernel import IPKernelApp |
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25 | from IPython.zmq.ipkernel import IPKernelApp | |
26 | from IPython.zmq.session import Session, default_secure |
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26 | from IPython.zmq.session import Session, default_secure | |
27 | from IPython.zmq.zmqshell import ZMQInteractiveShell |
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27 | from IPython.zmq.zmqshell import ZMQInteractiveShell | |
28 | from IPython.frontend.kernelmixinapp import ( |
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28 | from IPython.frontend.kernelmixinapp import ( | |
29 | IPythonMixinConsoleApp, app_aliases, app_flags |
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29 | IPythonMixinConsoleApp, app_aliases, app_flags | |
30 | ) |
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30 | ) | |
31 |
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31 | |||
32 | from IPython.frontend.zmqterminal.interactiveshell import ZMQTerminalInteractiveShell |
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32 | from IPython.frontend.zmqterminal.interactiveshell import ZMQTerminalInteractiveShell | |
33 |
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33 | |||
34 | #----------------------------------------------------------------------------- |
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34 | #----------------------------------------------------------------------------- | |
35 | # Globals |
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35 | # Globals | |
36 | #----------------------------------------------------------------------------- |
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36 | #----------------------------------------------------------------------------- | |
37 |
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37 | |||
38 | _examples = """ |
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38 | _examples = """ | |
39 | ipython console # start the ZMQ-based console |
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39 | ipython console # start the ZMQ-based console | |
40 | ipython console --existing # connect to an existing ipython session |
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40 | ipython console --existing # connect to an existing ipython session | |
41 | """ |
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41 | """ | |
42 |
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42 | |||
43 | #----------------------------------------------------------------------------- |
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43 | #----------------------------------------------------------------------------- | |
44 | # Flags and Aliases |
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44 | # Flags and Aliases | |
45 | #----------------------------------------------------------------------------- |
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45 | #----------------------------------------------------------------------------- | |
46 |
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46 | |||
47 | # XXX: the app_flags should really be flags from the mixin |
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47 | # XXX: the app_flags should really be flags from the mixin | |
48 | flags = dict(app_flags) |
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48 | flags = dict(app_flags) | |
49 | frontend_flags = { } |
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49 | frontend_flags = { } | |
50 | flags.update(frontend_flags) |
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50 | flags.update(frontend_flags) | |
51 |
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51 | |||
52 | frontend_flags = frontend_flags.keys() |
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52 | frontend_flags = frontend_flags.keys() | |
53 |
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53 | |||
54 | aliases = dict(app_aliases) |
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54 | aliases = dict(app_aliases) | |
55 |
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55 | |||
56 | frontend_aliases = dict() |
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56 | frontend_aliases = dict() | |
57 |
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57 | |||
58 | aliases.update(frontend_aliases) |
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58 | aliases.update(frontend_aliases) | |
59 |
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59 | |||
60 | #----------------------------------------------------------------------------- |
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60 | #----------------------------------------------------------------------------- | |
61 | # Classes |
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61 | # Classes | |
62 | #----------------------------------------------------------------------------- |
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62 | #----------------------------------------------------------------------------- | |
63 |
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63 | |||
64 |
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64 | |||
65 | class ZMQTerminalIPythonApp(TerminalIPythonApp, IPythonMixinConsoleApp): |
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65 | class ZMQTerminalIPythonApp(TerminalIPythonApp, IPythonMixinConsoleApp): | |
66 | name = "ipython console" |
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66 | name = "ipython console" | |
67 | """Start a terminal frontend to the IPython zmq kernel.""" |
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67 | """Start a terminal frontend to the IPython zmq kernel.""" | |
68 |
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68 | |||
69 | description = """ |
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69 | description = """ | |
70 | The IPython terminal-based Console. |
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70 | The IPython terminal-based Console. | |
71 |
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71 | |||
72 | This launches a Console application inside a terminal. |
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72 | This launches a Console application inside a terminal. | |
73 |
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73 | |||
74 | The Console supports various extra features beyond the traditional |
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74 | The Console supports various extra features beyond the traditional | |
75 | single-process Terminal IPython shell, such as connecting to an |
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75 | single-process Terminal IPython shell, such as connecting to an | |
76 | existing ipython session, via: |
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76 | existing ipython session, via: | |
77 |
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77 | |||
78 | ipython console --existing |
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78 | ipython console --existing | |
79 |
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79 | |||
80 | where the previous session could have been created by another ipython |
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80 | where the previous session could have been created by another ipython | |
81 | console, an ipython qtconsole, or by opening an ipython notebook. |
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81 | console, an ipython qtconsole, or by opening an ipython notebook. | |
82 |
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82 | |||
83 | """ |
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83 | """ | |
84 | examples = _examples |
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84 | examples = _examples | |
85 |
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85 | |||
86 | classes = List([IPKernelApp, ZMQTerminalInteractiveShell]) |
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86 | classes = List([IPKernelApp, ZMQTerminalInteractiveShell]) | |
87 | flags = Dict(flags) |
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87 | flags = Dict(flags) | |
88 | aliases = Dict(aliases) |
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88 | aliases = Dict(aliases) | |
89 | subcommands = Dict() |
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89 | subcommands = Dict() | |
90 | def parse_command_line(self, argv=None): |
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90 | def parse_command_line(self, argv=None): | |
91 | super(ZMQTerminalIPythonApp, self).parse_command_line(argv) |
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91 | super(ZMQTerminalIPythonApp, self).parse_command_line(argv) | |
92 | IPythonMixinConsoleApp.parse_command_line(self,argv) |
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92 | IPythonMixinConsoleApp.parse_command_line(self,argv) | |
93 | self.swallow_args(frontend_aliases,frontend_flags,argv=argv) |
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93 | self.swallow_args(frontend_aliases,frontend_flags,argv=argv) | |
94 |
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94 | |||
95 | def init_shell(self): |
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95 | def init_shell(self): | |
96 | IPythonMixinConsoleApp.initialize(self) |
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96 | IPythonMixinConsoleApp.initialize(self) | |
97 | # relay sigint to kernel |
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97 | # relay sigint to kernel | |
98 | signal.signal(signal.SIGINT, self.handle_sigint) |
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98 | signal.signal(signal.SIGINT, self.handle_sigint) | |
99 | self.shell = ZMQTerminalInteractiveShell.instance(config=self.config, |
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99 | self.shell = ZMQTerminalInteractiveShell.instance(config=self.config, | |
100 | display_banner=False, profile_dir=self.profile_dir, |
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100 | display_banner=False, profile_dir=self.profile_dir, | |
101 | ipython_dir=self.ipython_dir, kernel_manager=self.kernel_manager) |
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101 | ipython_dir=self.ipython_dir, kernel_manager=self.kernel_manager) | |
102 |
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102 | |||
103 | def handle_sigint(self, *args): |
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103 | def handle_sigint(self, *args): | |
104 | self.shell.write('KeyboardInterrupt\n') |
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104 | self.shell.write('KeyboardInterrupt\n') | |
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105 | if self.kernel_manager.has_kernel: | |||
105 | self.kernel_manager.interrupt_kernel() |
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106 | self.kernel_manager.interrupt_kernel() | |
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107 | else: | |||
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108 | print 'Kernel process is either remote or unspecified.', | |||
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109 | print 'Cannot interrupt.' | |||
106 |
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110 | |||
107 | def init_code(self): |
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111 | def init_code(self): | |
108 | # no-op in the frontend, code gets run in the backend |
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112 | # no-op in the frontend, code gets run in the backend | |
109 | pass |
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113 | pass | |
110 |
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114 | |||
111 | def launch_new_instance(): |
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115 | def launch_new_instance(): | |
112 | """Create and run a full blown IPython instance""" |
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116 | """Create and run a full blown IPython instance""" | |
113 | app = ZMQTerminalIPythonApp.instance() |
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117 | app = ZMQTerminalIPythonApp.instance() | |
114 | app.initialize() |
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118 | app.initialize() | |
115 | app.start() |
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119 | app.start() | |
116 |
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120 | |||
117 |
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121 | |||
118 | if __name__ == '__main__': |
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122 | if __name__ == '__main__': | |
119 | launch_new_instance() |
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123 | launch_new_instance() | |
120 |
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124 |
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