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Python's indentation rules apply only to logicallines (as the documentation is careful to spell out), although theindentation level only comes from the first physical line. This opens upvarious sorts of peculiarity and evil, some of which I mentioned lasttime .
There are two ways for multiple physical lines to be joinedinto one logical lines: being explicitly continued witha \ at the end of the line ( explicit line joining ), orbeing inside a ( , { , or [ ( implicit line joining )
Our SMTP frontend crashed and restarted today at 2:51pm, which meansthat some stats are a little bit distorted. This week, we:
# /etc/init.d/exim4 stopStopping MTA: exim4.# pidof exim43559# grep PIDFILE /etc/init.d/exim4 | sed 1qPIDFILE="/var/run/exim4/exim.pid"# ls -ld /var/run/exim4ls: /var/run/exim4: No such file or directory# mount | fgrep /var/runvarrun on /var/run type tmpfs (rw
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One of the interesting things about Python for compiler geeks is that itis a partially implicit context language, in that line indentation issignificant. Implicit context languages been out of favour for a verylong time, and most parsing techniques these days are geared towardsstream oriented grammars.
(By 'implicit context languages' I mean ones where state changes likeentering and exiting blocks are implicit in the difference betweenlines, such as different indentation levels. By contrast, streamoriented languages use explicit markers for such state changes, like