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| author | Guido van Rossum <guido@python.org> | 2001-04-20 19:13:02 +0000 |
|---|---|---|
| committer | Guido van Rossum <guido@python.org> | 2001-04-20 19:13:02 +0000 |
| commit | b934d7170094f9710e0176ead4855fea342a362b (patch) | |
| tree | 4903ce786a355fac7a6c46c6552ccb113c1d25cc /Lib/dis.py | |
| parent | 85512b0abedd85dec25a03f5270a8a4e24b3269d (diff) | |
| download | cpython-b934d7170094f9710e0176ead4855fea342a362b.tar.gz | |
Iterators phase 1. This comprises:
new slot tp_iter in type object, plus new flag Py_TPFLAGS_HAVE_ITER
new C API PyObject_GetIter(), calls tp_iter
new builtin iter(), with two forms: iter(obj), and iter(function, sentinel)
new internal object types iterobject and calliterobject
new exception StopIteration
new opcodes for "for" loops, GET_ITER and FOR_ITER (also supported by dis.py)
new magic number for .pyc files
new special method for instances: __iter__() returns an iterator
iteration over dictionaries: "for x in dict" iterates over the keys
iteration over files: "for x in file" iterates over lines
TODO:
documentation
test suite
decide whether to use a different way to spell iter(function, sentinal)
decide whether "for key in dict" is a good idea
use iterators in map/filter/reduce, min/max, and elsewhere (in/not in?)
speed tuning (make next() a slot tp_next???)
Diffstat (limited to 'Lib/dis.py')
| -rw-r--r-- | Lib/dis.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Lib/dis.py b/Lib/dis.py index dc3025721f..fb9736983c 100644 --- a/Lib/dis.py +++ b/Lib/dis.py @@ -205,6 +205,7 @@ def_op('BINARY_AND', 64) def_op('BINARY_XOR', 65) def_op('BINARY_OR', 66) def_op('INPLACE_POWER', 67) +def_op('GET_ITER', 68) def_op('PRINT_EXPR', 70) def_op('PRINT_ITEM', 71) @@ -232,6 +233,7 @@ HAVE_ARGUMENT = 90 # Opcodes from here have an argument: name_op('STORE_NAME', 90) # Index in name list name_op('DELETE_NAME', 91) # "" def_op('UNPACK_SEQUENCE', 92) # Number of tuple items +def_op('FOR_ITER', 93) name_op('STORE_ATTR', 95) # Index in name list name_op('DELETE_ATTR', 96) # "" |