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Modernize Python exception syntax in documentation

Change the exception syntax used in the documentation to use the morecurrent except Exception as ex:rather than the old except Exception, ex:We keep the old syntax in the test code since Python <2.6 is stillsupported there, but the documentation might as well use the modernsyntax.

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doc/src/sgml
- plpython.sgml

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`‎doc/src/sgml/plpython.sgml`

Lines changed: 4 additions & 4 deletions

Original file line number	Diff line number	Diff line change
`@@ -1227,7 +1227,7 @@ except spiexceptions.DivisionByZero:`
`1227`	`1227`	`return "denominator cannot equal zero"`
`1228`	`1228`	`except spiexceptions.UniqueViolation:`
`1229`	`1229`	`return "already have that fraction"`
`1230`		`-except plpy.SPIError, e:`
	`1230`	`+except plpy.SPIError as e:`
`1231`	`1231`	`return "other error, SQLSTATE %s" % e.sqlstate`
`1232`	`1232`	`else:`
`1233`	`1233`	`return "fraction inserted"`
`@@ -1274,7 +1274,7 @@ CREATE FUNCTION transfer_funds() RETURNS void AS $$`
`1274`	`1274`	`try:`
`1275`	`1275`	`plpy.execute("UPDATE accounts SET balance = balance - 100 WHERE account_name = 'joe'")`
`1276`	`1276`	`plpy.execute("UPDATE accounts SET balance = balance + 100 WHERE account_name = 'mary'")`
`1277`		`-except plpy.SPIError, e:`
	`1277`	`+except plpy.SPIError as e:`
`1278`	`1278`	`result = "error transferring funds: %s" % e.args`
`1279`	`1279`	`else:`
`1280`	`1280`	`result = "funds transferred correctly"`
`@@ -1306,7 +1306,7 @@ try:`
`1306`	`1306`	`with plpy.subtransaction():`
`1307`	`1307`	`plpy.execute("UPDATE accounts SET balance = balance - 100 WHERE account_name = 'joe'")`
`1308`	`1308`	`plpy.execute("UPDATE accounts SET balance = balance + 100 WHERE account_name = 'mary'")`
`1309`		`-except plpy.SPIError, e:`
	`1309`	`+except plpy.SPIError as e:`
`1310`	`1310`	`result = "error transferring funds: %s" % e.args`
`1311`	`1311`	`else:`
`1312`	`1312`	`result = "funds transferred correctly"`
`@@ -1357,7 +1357,7 @@ try:`
`1357`	`1357`	`raise`
`1358`	`1358`	`else:`
`1359`	`1359`	`subxact.exit(None, None, None)`
`1360`		`-except plpy.SPIError, e:`
	`1360`	`+except plpy.SPIError as e:`
`1361`	`1361`	`result = "error transferring funds: %s" % e.args`
`1362`	`1362`	`else:`
`1363`	`1363`	`result = "funds transferred correctly"`

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`‎doc/src/sgml/plpython.sgml`

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