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d S( s8 General floating point formatting functions.
Functions:
fix(x, digits_behind)
sci(x, digits_behind)
Each takes a number or a string and a number of digits as arguments.
Parameters:
x: number to be formatted; or a string resembling a number
digits_behind: number of digits behind the decimal point
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d } n | o | d } n | o t | d ƒ } n d } | | | | f S( sÅ Return (sign, intpart, fraction, expo) or raise an exception:
sign is '+' or '-'
intpart is 0 or more digits beginning with a nonzero
fraction is 0 or more digits
expo is an integeri i i i t +t i N( t decodert matcht NoneR t groupt int( t st rest signt intpartt fractiont exppartt expo( ( s$ /usr/local/lib/python2.5/fpformat.pyt extract s
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c C s¾ | d j oL t | ƒ } | | | | | } } | | j o | d | | } q´ n\ | d j oN t | ƒ } | | | | | } } | | j o d | | | } q´ n | | f S( s5 Remove the exponent by changing intpart and fraction.i t 0( t len( R R R t ft i( ( s$ /usr/local/lib/python2.5/fpformat.pyt unexpo/ s
c C sp t | ƒ } | | j o | | d | | f Sn t | ƒ } | | d j o d | d f Sn | | } | | | } | d j o® | | d } xL | d j o$ | | d j o Pn | d } q™ Wd | } | d } d } | | t t | | ƒ d ƒ d t | ƒ | d } | | | | } } n | d j o | | | f Sn | | d | d f Sd S( s* Round or extend the fraction to size digs.R i R t 5i t 9N( R t chrt ord( R R t digsR R t totalt nextdigitt n( ( s$ /usr/local/lib/python2.5/fpformat.pyt roundfrac= s.
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d } n | d j o | | d | Sn | | Sd S( s‡ Format x as [-]ddd.ddd with 'digs' digits after the point
and at least one digit before.
If digs <= 0, the point is suppressed.R i R i t .N( t typet reprR R R R! ( t xR R R R R ( ( s$ /usr/local/lib/python2.5/fpformat.pyR W s
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| S( s¥ Format x as [-]d.dddE[+-]ddd with 'digs' digits after the point
and exactly one digit before.
If digs is <= 0, one digit is kept and the point is suppressed.R i R i iÿÿÿÿR" i t -R t e( R# R$ R R t maxR! t abs( R% R R R R R R R' ( ( s$ /usr/local/lib/python2.5/fpformat.pyR g s8
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o n Xd S( s Interactive test run.s Enter (x, digs): N( t inputR R t EOFErrort KeyboardInterrupt( R% R ( ( s$ /usr/local/lib/python2.5/fpformat.pyt test‡ s &( t __doc__t ret __all__t compileR t
ValueErrorR t TypeErrorR R R! R R R- ( ( ( s$ /usr/local/lib/python2.5/fpformat.pys <module> s