python调用cmd复制文件代码分享

def load() :
filename = os.getcwd() + r'\fromto.txt'
if os.path.isfile(filename) :
f = open(filename)
try :
lines = f.readlines()
finally :
f.close()
return lines
else :
print('请创建fromto.txt.')
input()
exit()

def display(_lines) :
linenum = 1
s = '序号 源文件 目标文件\n'
for line in _lines :
s += str(linenum) + ' ' + line
linenum += 1
return s + '\n' + r'请输入序号:'

def work(s, _lines) :
cmd = r'copy /y ' + _lines[int(s)-1]
print(cmd)
os.system(cmd)

if __name__ == "__main__" :

lines = load()

while True :
try :
s = input(display(lines)).strip()
if s.lower() == 'exit' :
break
if int(s) == 0 :
lines = load()
print('已重新加载')
continue

work(s, lines)

except :
input('--Error--')

fromto.txt内容