Formatted input function

[candide]

I have a text file and the first line provides the best score of a game. This
line has the following format :

Best score : 42

In order to update the score, I try to retrieve the score value.

In C, we would manage this with the following statement :

fscanf(foo_file, "Best score : %d", &score);

Does Python provide an equivalent ?

 

[Chris Rebert]

I have a text file and the first line provides the best score of a game. This
line has  the following format :

Best score : 42

In order to update the score, I try to retrieve the score value.

In C, we would manage this with the following statement :

fscanf(foo_file, "Best score : %d", &score);

Does Python provide an equivalent ?

Not an exact one, but it's still easily accomplished:

score = int(foo_file.read().split(":").strip())

Cheers,
Chris

 

[Terry Reedy]

Not an exact one, but it's still easily accomplished:

score = int(foo_file.read().split(":").strip())

One must, of course, select the second item from the list returned by
..split. The .strip() seems not to be needed, at least in 3.1, as int()
ignores whitespace.

>>> s='Best score : 42\n'
>>> int(s.split(':')[1])

42

 

[Günther Dietrich]

In C, we would manage this with the following statement :

fscanf(foo_file, "Best score : %d", &score);

Does Python provide an equivalent ?

RTFM!

In the python 2.5 manual: Chapter 4.2.6 (search pattern 'scanf' on the
index tab of python25.chm)

There are some scanf-patterns with corresponding regular expressions
listed.

Works quite nice.



Best regards,

Günther

 

[Chris Rebert]

One must, of course, select the second item from the list returned by
.split.

(whacks forehead)

One should not answer threads at 3AM local time without
double-checking the solution...

- Chris

 

[candide]

Günther Dietrich a écrit :

RTFM!

In the python 2.5 manual: Chapter 4.2.6 (search pattern 'scanf' on the
index tab of python25.chm)

Correct !! For once the Manual gives an inambiguous answer :