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ch18: update from book draft

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This commit is contained in:
Luciano Ramalho
2020-02-19 00:15:20 -03:00
parent d63b4844f1
commit 0ca34e2676
3 changed files with 22 additions and 22 deletions
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12
18-context-mngr/mirror_gen.py
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@@ -4,7 +4,7 @@ A "mirroring" ``stdout`` context manager.
While active, the context manager reverses text output to
``stdout``::
# BEGIN MIRROR_GEN_DEMO_1
# tag::MIRROR_GEN_DEMO_1[]
>>> from mirror_gen import looking_glass
>>> with looking_glass() as what: # <1>
@@ -16,12 +16,12 @@ While active, the context manager reverses text output to
>>> what
'JABBERWOCKY'
# END MIRROR_GEN_DEMO_1
# end::MIRROR_GEN_DEMO_1[]
This exposes the context manager operation::
# BEGIN MIRROR_GEN_DEMO_2
# tag::MIRROR_GEN_DEMO_2[]
>>> from mirror_gen import looking_glass
>>> manager = looking_glass() # <1>
@@ -38,12 +38,12 @@ This exposes the context manager operation::
>>> monster
'JABBERWOCKY'
# END MIRROR_GEN_DEMO_2
# end::MIRROR_GEN_DEMO_2[]
"""
# BEGIN MIRROR_GEN_EX
# tag::MIRROR_GEN_EX[]
import contextlib
@@ -61,4 +61,4 @@ def looking_glass():
sys.stdout.write = original_write # <6>
# END MIRROR_GEN_EX
# end::MIRROR_GEN_EX[]