Re: Iterator instances not independent
Sarfraaz Ahmed via Tutor <[email protected]> Mon, 8 Dec 2025 15:11:59 +0530
| Newsgroups | gmane.comp.python.tutor |
|---|---|
| Message-ID | <CAKvdLD5aCVQR3TFAGbVExm93tMzqsAOJ3spRYryu1-CiPCdx6A@mail.gmail.com> |
SGVsbG8gRnJhbiwNCg0KTXkgZmlyc3QgZ3Vlc3MgaXMgdGhhdCB0aGUgImZvciIgbG9vcCBpcyBh bHNvIGRvaW5nIGEgIm5leHQiIG9uIHNlcUEgKA0KYXBhcnQgZnJvbSB0aGUgZXhwbGljaXQgbmV4 dCgpIGluIHRoZSBwcmludCBzdGF0ZW1lbnQgYXQgdGhlIGVuZCBvZiB0aGUNCmxvb3AgKQ0KDQpB ZGQgc29tZSBwcmludCBzdGF0ZW1lbnRzIHRvIHlvdXIgY2xhc3MgbWV0aG9kcyB0byBmb2xsb3cg dGhlIGNvZGUgZmxvdy4gSXQNCm1pZ2h0IGdpdmUgeW91IHNvbWUgaGludHMuDQoNCkFsc28sIGl0 IHdvdWxkIGhlbHAgaWYgeW91IGhhdmUgYSBzZXBhcmF0ZSBJdGVyYXRvciBjbGFzcy4gVGh1cyBz ZXBhcmF0aW5nDQpvdXQgdGhlIG9wZXJhdGlvbnMgb24gU2VxdWVuY2UgYW5kIGl0cyBJdGVyYXRp b25zLg0KDQpPbiBNb24sIERlYyA4LCAyMDI1IGF0IDI6MjjigK9QTSBGcmFuY2lzIEJlbGxpdmVh dSB2aWEgVHV0b3IgPHR1dG9yQHB5dGhvbi5vcmc+DQp3cm90ZToNCg0KPiBIZWxsbyBhbGwuDQo+ DQo+IEkgY3JlYXRlZCBhIFNlcXVlbmNlSW50IGNsYXNzIGZvciBpdGVyYXRpb24gYnV0IGRpZmZl cmVudCBpbnN0YW5jZXMgZG8gbm90DQo+IHNlZW0gaW5kZXBlbmRlbnQuICBUaGUgY29kZSBsb29r cyBsaWtlOg0KPg0KPiBjbGFzcyBTZXF1ZW5jZUludDoNCj4gICAgIGRlZiBfX2luaXRfXyhzZWxm LCBsYXN0PTEwKToNCj4gICAgICAgICBzZWxmLnZhbCA9IDANCj4gICAgICAgICBzZWxmLkxBU1Qg PSBsYXN0DQo+DQo+ICAgICBkZWYgX19pdGVyX18oc2VsZik6DQo+ICAgICAgICAgc2VsZi52YWwg PSAwDQo+ICAgICAgICAgcmV0dXJuIHNlbGYNCj4NCj4gICAgIGRlZiBfX25leHRfXyhzZWxmKToN Cj4gICAgICAgICBpZiAoc2VsZi5oYXNOZXh0KCkpOg0KPiAgICAgICAgICAgICBzZWxmLnZhbCAr PSAxDQo+ICAgICAgICAgZWxzZToNCj4gICAgICAgICAgICAgcmFpc2UgU3RvcEl0ZXJhdGlvbg0K PiAgICAgICAgIHJldHVybiBzZWxmLnZhbA0KPg0KPiAgICAgZGVmIF9fbGVuX18oc2VsZik6DQo+ ICAgICAgICAgcmV0dXJuIHNlbGYuTEFTVCAtIHNlbGYudmFsDQo+DQo+ICAgICBkZWYgaGFzTmV4 dChzZWxmKToNCj4gICAgICAgICByZXR1cm4gYm9vbChsZW4oc2VsZikpDQo+DQo+IFRoZSBtYWlu IGJvZHkgb2YgdGhlIHRlc3QgYXBwbGljYXRpb24gbG9va3MgbGlrZToNCj4NCj4gc2VxQSA9IFNl cXVlbmNlSW50KCkNCj4gc2VxQiA9IFNlcXVlbmNlSW50KDUpDQo+IGl0QiA9IGl0ZXIoc2VxQikN Cj4gaXRBID0gaXRlcihzZXFBKQ0KPg0KPiBmb3IgeCBpbiBzZXFBOg0KPiAgICAgaWYgKHNlcUIu aGFzTmV4dCgpKToNCj4gICAgICAgICBiU3RyID0gc3RyKG5leHQoaXRCKSkNCj4gICAgIGVsc2U6 DQo+ICAgICAgICAgYlN0ciA9ICJkb25lIg0KPiAgICAgcHJpbnQoIkEgPSIsIG5leHQoaXRBKSwg IkIgPSIsIGJTdHIpDQo+DQo+IFRoZSBvdXRwdXQgbG9va3MgbGlrZToNCj4NCj4gQSA9IDIgQiA9 IDENCj4gQSA9IDQgQiA9IDINCj4gQSA9IDYgQiA9IDMNCj4gQSA9IDggQiA9IDQNCj4gQSA9IDEw IEIgPSA1DQo+DQo+IFRoZSBxdWVzdGlvbiBpcyB3aHkgZG9lcyBBIGluY3JlbWVudCBieSAyPw0K PiBBcmVuJ3QgdGhlIHR3byBpdGVyYXRvcnMgaW5kZXBlbmRlbnQgb2YgZWFjaCBvdGhlcj8NCj4g VGhpcyBkb2Vzbid0IHNlZW0gdG9vIGNvbXBsZXggdG8gbWUuDQo+DQo+IFB5dGhvbiB2ZXJzaW9u IGlzOiAzLjkuNiAoZGVmYXVsdCwgT2N0IDE3IDIwMjUsIDE3OjE1OjUzKSBbQ2xhbmcgMTcuMC4w DQo+IChjbGFuZy0xNzAwLjQuNC4xKV0gIG9uIE1hYyBPUyAyNi4xDQo+DQo+IExvb2tpbmcgZm9y d2FyZCB0byBhbnkgaGVscCB1bmRlcnN0YW5kaW5nIHdoeSB0aGlzIGlzIGhhcHBlbmluZy4NCj4g RnJhbg0KPg0KPiBfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f Xw0KPiBUdXRvciBtYWlsbGlzdCAgLSAgVG8gdW5zdWJzY3JpYmUgc2VuZCBhbiBlbWFpbCB0byB0 dXRvci1sZWF2ZUBweXRob24ub3JnDQo+IFRvIHVuc3Vic2NyaWJlIG9yIGNoYW5nZSBzdWJzY3Jp cHRpb24gb3B0aW9uczoNCj4gJSh3ZWJfcGFnZV91cmwpc2xpc3RpbmZvLyUoX2ludGVybmFsX25h bWUpcw0KPg0KDQoNCi0tIA0KICAgICAgICBKYXphYWsgQWxsYWh1IEtoYWlyDQogICAgICAgICAg ICAgICAtLSBTYXJmcmFheiBBaG1lZA0KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KVHV0b3IgbWFpbGxpc3QgIC0gIFRvIHVuc3Vic2NyaWJlIHNlbmQgYW4g ZW1haWwgdG8gdHV0b3ItbGVhdmVAcHl0aG9uLm9yZwpUbyB1bnN1YnNjcmliZSBvciBjaGFuZ2Ug c3Vic2NyaXB0aW9uIG9wdGlvbnM6CiUod2ViX3BhZ2VfdXJsKXNsaXN0aW5mby8lKF9pbnRlcm5h bF9uYW1lKXMK