57 lines
1.8 KiB
Markdown
57 lines
1.8 KiB
Markdown
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# last_error
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Return data on the last error.
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```
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last_error()
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```
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Return Value
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Return the last error code and description as a tuple.
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Note
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last_error() allows obtaining an error code in case of a failed execution of a MetaTrader 5 library function. It is similar to [GetLastError()](/en/docs/check/getlasterror). However, it applies its own error codes. Possible values:
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| Constant | Value | Description |
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| --- | --- | --- |
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| RES_S_OK | 1 | generic success |
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| RES_E_FAIL | -1 | generic fail |
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| RES_E_INVALID_PARAMS | -2 | invalid arguments/parameters |
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| RES_E_NO_MEMORY | -3 | no memory condition |
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| RES_E_NOT_FOUND | -4 | no history |
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| RES_E_INVALID_VERSION | -5 | invalid version |
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| RES_E_AUTH_FAILED | -6 | authorization failed |
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| RES_E_UNSUPPORTED | -7 | unsupported method |
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| RES_E_AUTO_TRADING_DISABLED | -8 | auto-trading disabled |
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| RES_E_INTERNAL_FAIL | -10000 | internal IPC general error |
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| RES_E_INTERNAL_FAIL_SEND | -10001 | internal IPC send failed |
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| RES_E_INTERNAL_FAIL_RECEIVE | -10002 | internal IPC recv failed |
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| RES_E_INTERNAL_FAIL_INIT | -10003 | internal IPC initialization fail |
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| RES_E_INTERNAL_FAIL_CONNECT | -10003 | internal IPC no ipc |
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| RES_E_INTERNAL_FAIL_TIMEOUT | -10005 | internal timeout |
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Example:
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```
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import MetaTrader5 as mt5
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# display data on the MetaTrader 5 package
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print("MetaTrader5 package author: ",mt5.__author__)
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print("MetaTrader5 package version: ",mt5.__version__)
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# establish connection to the MetaTrader 5 terminal
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if not mt5.initialize():
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print("initialize() failed, error code =",mt5.last_error())
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quit()
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# shut down connection to the MetaTrader 5 terminal
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mt5.shutdown()
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```
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See also
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[version](/en/docs/python_metatrader5/mt5version_py), [GetLastError](/en/docs/check/getlasterror)
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