mention np.errstate context manager in exercise 31.

2016-10-29 17:03:53 +03:00 · 2016-10-29 17:03:53 +03:00 · 4cb1d8cd76
commit 4cb1d8cd76
parent e8ad2e1123
1 changed files with 8 additions and 1 deletions
--- a/exercises.md
+++ b/exercises.md
@ -282,12 +282,19 @@ print(np.intersect1d(Z1,Z2))
 ```python
 # Suicide mode on
 defaults = np.seterr(all="ignore")
-Z = np.ones(1)/0
+Z = np.ones(1) / 0

 # Back to sanity
 _ = np.seterr(**defaults)
 ```

+An equivalent way, with a context manager:
+
+```python
+with np.errstate(divide='ignore'):
+    Z = np.ones(1) / 0
+```
+
 #### 32. Is the following expressions true? (★☆☆)