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kb/python-course-kb-practical-python/wiki/exercises/6-15-code-simplification.md

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+---
+id: practical-python-6.15
+source_exercise_id: "6.15"
+title: "Code simplification"
+section: "6.4 More Generators"
+source_path: "06_Generators/04_More_generators.md"
+source_repo: "https://github.com/dabeaz-course/practical-python"
+source_commit: "93dca856b41c61a0a0f85ae334116e4c125629ea"
+student_visible_solution: false
+has_private_solution: true
+skip: false
+---
+
+# Exercise 6.15: Code simplification
+
+> Source: Practical Python Programming, `06_Generators/04_More_generators.md`.
+
+### Exercise 6.15: Code simplification
+
+Generators expressions are often a useful replacement for
+small generator functions.  For example, instead of writing a
+function like this:
+
+```python
+def filter_symbols(rows, names):
+    for row in rows:
+        if row['name'] in names:
+            yield row
+```
+
+You could write something like this:
+
+```python
+rows = (row for row in rows if row['name'] in names)
+```
+
+Modify the `ticker.py` program to use generator expressions
+as appropriate.
+
+
+[Contents](../Contents.md) \| [Previous (6.3 Producer/Consumer)](03_Producers_consumers.md) \| [Next (7 Advanced Topics)](../07_Advanced_Topics/00_Overview.md)
+
+## 关联来源
+
+- [[summaries/04_More_generators]]