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context manager examples

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This commit is contained in:
andygoblins
2020-02-22 11:28:50 -06:00
parent f1f450cedc
commit 08af4ce9bd
2 changed files with 16 additions and 21 deletions
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16
bindings/python/example_scripts/simple_book.py
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@@ -11,15 +11,15 @@ from gnucash import Session
uri = "xml:///tmp/simple_book.gnucash" uri = "xml:///tmp/simple_book.gnucash"
print("uri:", uri) print("uri:", uri)
ses = Session(uri, is_new=True) with Session(uri, is_new=True) as ses:
book = ses.get_book() book = ses.get_book()
#Call some methods that produce output to show that Book works #Call some methods that produce output to show that Book works
book.get_root_account().SetDescription("hello, book") book.get_root_account().SetDescription("hello, book")
print("Book is saved:", not book.session_not_saved()) print("Book is saved:", not book.session_not_saved())
print("saving...") #As long as there's no exceptions, book is automatically saved
ses.save() #when session ends.
print("saving...")
print("Book is saved:", not book.session_not_saved()) print("Book is saved:", not book.session_not_saved())
ses.end()

21
bindings/python/example_scripts/simple_session.py
View File

@@ -19,18 +19,13 @@ except GnuCashBackendException as backend_exception:
# create a new file, this requires a file type specification # create a new file, this requires a file type specification
session = Session("xml://%s" % FILE_2, is_new=True) with Session("xml://%s" % FILE_2, is_new=True) as session:
session.save() book = session.book
session.end() root = book.get_root_account()
session.destroy()
# open the new file, try to open it a second time, detect the lock # open the new file, try to open it a second time, detect the lock
session = Session(FILE_2) with Session(FILE_2) as session:
try: try:
session_2 = Session(FILE_2) session_2 = Session(FILE_2)
except GnuCashBackendException as backend_exception: except GnuCashBackendException as backend_exception:
assert( ERR_BACKEND_LOCKED in backend_exception.errors ) assert( ERR_BACKEND_LOCKED in backend_exception.errors )
session.end()
session.destroy()