python 合并文件的具体实例
支持两种用法：
(1)合并某一文件夹下的所有文件(忽略文件夹等非文件条目)
(2)显示的合并多文件。
复制代码 代码如下:
import sys
import os
\’\’\’
usage(1): merge_files pathname
pathname is directory and merge files in pathname directory
usage(2): merge_files file1 file2 [file3[…]]
\’\’\’
FILE_SLIM = (256*(1024*1024)) #256M match 2**n
def merge_files(fileslist,mfname):
global FILE_SLIM
p_fp = open(mfname,\”wba\”)
for file in fileslist:
with open(file,\”rb\”) as c_fp:
fsize = os.stat(file).st_size
count = fsize&FILE_SLIM
while count>0:
p_fp.write(c_fp.read(FILE_SLIM))
fsize -= FILE_SLIM
count -= 1
p_fp.write(c_fp.read())
p_fp.close
def main():
argc = len(sys.argv) – 1
fileslist = []
if argc == 2:
dir_name = os.path.realpath(sys.argv[1])
assert(os.path.isdir(dir_name))
file_dir = os.listdir(dir_name)
fileslist = [os.path.join(dir_name,file) for file in file_dir if os.path.isfile(os.path.join(dir_name,file))]
print(fileslist)
elif argc >=3:
fileslist = [os.path.realpath(sys.argv[index]) for index in range(1,argc) if os.path.isfile(os.path.realpath(sys.argv[index]))]
merge_files(fileslist,sys.argv[argc])
if __name__ == \’__main__\’:
main()