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| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Mon, 25 May 2009 13:22:20 +0200 |
| parents | 798efee55cd0 |
| children | 0c19ed1ce349 |
| rev | line source |
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36
ae4554656fa1
Added an eval function.
David Grundberg <individ@acc.umu.se>
parents:
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1 Version 0.1.1-bzr |
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ae4554656fa1
Added an eval function.
David Grundberg <individ@acc.umu.se>
parents:
33
diff
changeset
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2 |
| 44 | 3 2009-05-25 |
| 4 | |
| 5 * Added functionality for explicit manipulation of variables. | |
| 6 getvar, setvar, isvar can be used to get, set and query variables | |
| 7 in the current Octave scope. | |
| 8 Example: | |
| 9 pytave.setvar("x", 1) | |
| 10 pytave.eval(0,"x += 1") | |
| 11 x = pytave.getvar("x") | |
| 12 | |
| 13 * Added functionality to push/pop anonymous scopes on the Octave call | |
| 14 stack. push_scope and pop_scope are provided to create an anonymous scope | |
| 15 and push it on Octave's call stack, to prevent cluttering other variables if | |
| 16 nested calls to pytave are in effect. | |
| 17 | |
| 18 Example: | |
| 19 pytave.push_scope() | |
| 20 pytave.setvar("x", something) | |
| 21 pytave.eval(0, "... do something with x) | |
| 22 pytave.pop_scope() # wipes out x and restores its previous value, if any | |
| 23 | |
| 24 Of course, for proper safety, try/finally block should be used to ensure the | |
| 25 cleanup. For convenience, a local_scope decorator is provided that encloses a | |
| 26 whole function in a push_scope/try/finally/pop_scope sequence: | |
| 27 | |
| 28 @pytave.local_scope | |
| 29 def my_oct_add(x,y): | |
| 30 pytave.setvar("x",x) | |
| 31 pytave.setvar("y",y) | |
| 32 result, = pytave.eval(1, "x + y") | |
| 33 return result | |
| 34 | |
| 35 this function, when called, will not affect the top-level values of x and y, if | |
| 36 any. | |
| 37 | |
| 38 * The Octave welcome banner is now only displayed if Python is run interactively. | |
| 39 | |
| 40 * {}, "" and '' are now accepted as return values and converted to an empty list/string. | |
| 41 | |
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36
ae4554656fa1
Added an eval function.
David Grundberg <individ@acc.umu.se>
parents:
33
diff
changeset
|
42 2009-05-07 |
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ae4554656fa1
Added an eval function.
David Grundberg <individ@acc.umu.se>
parents:
33
diff
changeset
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43 |
|
ae4554656fa1
Added an eval function.
David Grundberg <individ@acc.umu.se>
parents:
33
diff
changeset
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44 * Added an eval function. A string of Octave code can be executed |
|
ae4554656fa1
Added an eval function.
David Grundberg <individ@acc.umu.se>
parents:
33
diff
changeset
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45 through this function. The returned values are converted to Python |
|
ae4554656fa1
Added an eval function.
David Grundberg <individ@acc.umu.se>
parents:
33
diff
changeset
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46 objects as with the feval function. |
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ae4554656fa1
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David Grundberg <individ@acc.umu.se>
parents:
33
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changeset
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47 |
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ae4554656fa1
Added an eval function.
David Grundberg <individ@acc.umu.se>
parents:
33
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changeset
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48 In principle, this could be achieved simply using feval("eval", but |
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ae4554656fa1
Added an eval function.
David Grundberg <individ@acc.umu.se>
parents:
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49 the advantages to this implementation are: |
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ae4554656fa1
Added an eval function.
David Grundberg <individ@acc.umu.se>
parents:
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50 |
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ae4554656fa1
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parents:
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51 1. faster (avoids double call and double conversion of code string) |
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ae4554656fa1
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David Grundberg <individ@acc.umu.se>
parents:
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52 |
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ae4554656fa1
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parents:
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53 2. explicit control of printing rather than implicitly with nargout |
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ae4554656fa1
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David Grundberg <individ@acc.umu.se>
parents:
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54 (as in eval) |
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ae4554656fa1
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David Grundberg <individ@acc.umu.se>
parents:
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55 |
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parents:
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56 3. separate exception classes for parse error / execution error |
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ae4554656fa1
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David Grundberg <individ@acc.umu.se>
parents:
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57 |
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ae4554656fa1
Added an eval function.
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parents:
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58 2009-05-05 |
| 22 | 59 |
| 33 | 60 * Added functionality for one-row cell arrays. The Python list is |
| 61 converted to a one-row cell array and vice versa. | |
| 22 | 62 |
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37
798efee55cd0
Added --enable-float-matrices option. Some VPATH building issues fixed. Changelog now more standardized.
David Grundberg <individ@acc.umu.se>
parents:
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63 * Added functionality for structs. The Python dictionary is converted |
| 33 | 64 to a Octave struct and vice versa. The implementation tries to be |
| 65 as true as possible to Octave's struct constructor. | |
|
36
ae4554656fa1
Added an eval function.
David Grundberg <individ@acc.umu.se>
parents:
33
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66 |