io.py 文件源码

def rename(source, dest):
    """
Renames files specified by UNIX inpattern to those specified by UNIX
outpattern.  Can only handle a single '*' in the two patterns!!!

Usage:   rename (source, dest)     e.g., rename('*.txt', '*.c')
"""

    infiles = glob.glob(source)
    outfiles = []
    incutindex = string.index(source,'*')
    outcutindex = string.index(source,'*')
    findpattern1 = source[0:incutindex]
    findpattern2 = source[incutindex+1:]
    replpattern1 = dest[0:incutindex]
    replpattern2 = dest[incutindex+1:]
    for fname in infiles:
        if incutindex > 0:
            newname = re.sub(findpattern1,replpattern1,fname,1)
        if outcutindex < len(dest)-1:
            if incutindex > 0:
                lastone = string.rfind(newname,replpattern2)
                newname = newname[0:lastone] + re.sub(findpattern2,replpattern2,fname[lastone:],1)
            else:
                lastone = string.rfind(fname,findpattern2)
                if lastone <> -1:
                    newname = fname[0:lastone]
                    newname = newname + re.sub(findpattern2,replpattern2,fname[lastone:],1)
        os.rename(fname,newname)
    return