test: support reset instructions when mode=fast

Author: haraldschilly

examples.py

@@ -191,6 +191,17 @@ def examples_data(input_dir, output_fn):
  'julia': shutil.which('julia'),
 }
 
+def reset_code(lang):
+ '''
+ some code to reset local identifyers, in order to speed up execution (to avoid restarts)
+ while avoid side effects of previous examples (mostly, I guess)
+ '''
+ reset = {
+ 'sage': 'reset()',
+ 'python': '%reset -f'
+ }
+ return reset.get(lang.lower(), '')
+
 def language_to_kernel(lang):
  data = {
  "sage": "sagemath",
@@ -223,6 +234,9 @@ def get_jupyter(language, restart=True):
 
 def exec_jupyter(language, code, restart=False):
  client = get_jupyter(language, restart=restart)
+ if not restart:
+ # if we don't restart, prepend a reset instruction
+ code = '\n'.join([reset_code(language), code])
  msg_id = client.execute(code)
  outputs = []
  errors = []

src/sage/interact.yaml

@@ -24,6 +24,7 @@ code: |
  print("k: %s" % k)
  s = (1 - sqrt(k))^2
  print("s: %s" % s)
+test: false
 ---
 title: Symbolic Function
 descr: |
@@ -38,6 +39,7 @@ code: |
  @interact
  def f_interact(x=(0, 100)):
  print 'f({}) = {}'.format(x, f(x))
+test: false
 ---
 title: Multiple Sliders
 descr: |
@@ -50,3 +52,4 @@ code: |
  print("k: %s" % k)
  print("j: %s" % j)
  print("l: [%s, %s]" % l)
+test: false

src/sage/tutorial.yaml

@@ -107,13 +107,15 @@ descr: |
 
  *Warning*: when defining a symbolic function like `f(x) = x^2`, the variable `x`
  will not be a symbolic variable. So the code
+
  ```
  x = 7
  print x
  f(x) = x^2
  print x
  ```
- will print `7` and then `x`. 
+
+ will print `7` and then `x`.
 code: |
  def f(x):
  return 2*x