[Datasheet dowload] Catch requests.exceptions.TooManyRedirects

Closes #408

CHANGELOG.md

@@ -12,6 +12,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - `default_resistor_tolerance` which tolerance to use when none found.
   - `cache_3d_resistors` to avoid generating them all the time.
 - 3D: colored 3D models for THT resistors
+- Datasheet download:
+  - Avoid interruptions when too many redirections is detected (#408)
 
 ### Fixed
 - Makefile: don't skip all preflights on each run, just the ones we generate

kibot/out_download_datasheets.py

@@ -75,6 +75,9 @@ class Download_Datasheets_Options(VariantOptions):
                 except requests.exceptions.SSLError:
                     logger.warning(W_FAILDL+'SSL Error during download `{}`'.format(ds))
                     return None
+                except requests.exceptions.TooManyRedirects:
+                    logger.warning(W_FAILDL+'More than 30 redirections downloading `{}`'.format(ds))
+                    return None
                 if r.status_code != 200:
                     logger.warning(W_FAILDL+'Failed to download `{}`'.format(ds))
                     return None