Data not flushed at the moment

[MindClass]

I've to modifying a file, then I use a method imported that access to
that file and has to read the new data, but they are not read ( as if
the data were not flushed at the moment even using .close()
explicitly).

---
...
...
# If it is not installed, it looking for the line and insert it.
if not is_application:
print Activating I18n application ...
writefile_line = 0
a = fileinput.input(settings, inplace=1)
#for line in fileinput.input(settings, inplace=1):
for line in a:
writefile_line += 1
if writefile_line == readfile_line:
print '%s', % application_name
print line[:-1]
else:
print line[:-1]
a.close()

update()

def update():
# Update the data base.
try:
from django.core.management import syncdb
except ImportError, err:
print Can't import from Django: %s % err
sys.exit(1)

syncdb()
---

Note that it only fails if the update() method is run inner of 'if not
is_application', and I don't understand because it is happening so. But
the problem is that I need run it when that condition is performed. Any
idea?

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Re: Data not flushed at the moment

[MindClass]

Here it's very well explained:
http://groups.google.com/group/django-developers/browse_thread/thread/7bcb01ec38e7e6cd

syncdb() method:
http://code.djangoproject.com/browser/django/trunk/django/core/management.py#L435

But I'm not sure if is a django problem or from python.


MindClass ha escrito:

 I've to modifying a file, then I use a method imported that access to
 that file and has to read the new data, but they are not read ( as if
 the data were not flushed at the moment even using .close()
 explicitly).

 ---
 ...
 ...
 # If it is not installed, it looking for the line and insert it.
 if not is_application:
 print Activating I18n application ...
 writefile_line = 0
 a = fileinput.input(settings, inplace=1)
 #for line in fileinput.input(settings, inplace=1):
 for line in a:
 writefile_line += 1
 if writefile_line == readfile_line:
 print '%s', % application_name
 print line[:-1]
 else:
 print line[:-1]
 a.close()

 update()

 def update():
 # Update the data base.
 try:
 from django.core.management import syncdb
 except ImportError, err:
 print Can't import from Django: %s % err
 sys.exit(1)

 syncdb()
 ---

 Note that it only fails if the update() method is run inner of 'if not
 is_application', and I don't understand because it is happening so. But
 the problem is that I need run it when that condition is performed. Any
 idea?

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Import if condition is correct

[MindClass]

Is possible import a library according to a condition?

if Foo = True:
import bar

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Re: Import if condition is correct

[MindClass]

Georg Brandl wrote:
 MindClass wrote:
  Is possible import a library according to a condition?
 
  if Foo == True:
  import bar
 

 Why don't you try it?

I thinked that could be another way for import statement.

In that case I'll have to set a global variable before of the import
statements although I'd prefer not use them.

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Re: Import if condition is correct

[MindClass]

Steve Holden wrote:
 I'm guessing that you think this might be necessary to avoid importing
 the same module multiple times: it's not. Python only runs the module's
 code the first time the module is imported into a program. A further
 import statement effectively does noting, because the interpreter sees
 (from an entry in the sys.modules dictionary) that the module is already
 present.

The problem is that I've to import different libraries according to the
ORM (SQLObject, SQLAlchemy, etc)

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Reading standard input

[MindClass]

The program shows a license text, then the user has to accept the
license (or not).
Is there another way to get text from console? (that using
sys.stdin.read)

foo = sys.stdin.read(3)
if foo != 'yes'
sys.exit(0)

I also would to trap the KeyboardInterrupt for that doesn't show that
message. How would it be possible?

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