line_spoken=line_spoken.strip()
if role=='Man':
man.append(line_spoken)
elif role=='Other Man':
other.append(line_spoken)
except ValueError:
pass
data.close()
except IOError:
print('The datafile is missing!')
print (man)
print (other)
Tips:
使用open()方法打开磁盘文件时,默认的访问模式为r,表示读,不需要特意指定;
要打开一个文件完成写,需要指定模式w,如data=open("sketch.txt","w"),如果该文件已经存在则会清空现有内容;
要追加到一个文件,需要指定模式a,不会清空现有内容;
要打开一个文件完成写和读,且不清空现有内容,需要指定模式w+;
例如,将上例中保存的man和other内容以文件方式保存时,可修改如下:
import os
print(os.getcwd())
os.chdir('C:Python33HeadFirstPythonchapter3')
man=[]
other=[]
try:
data=open("sketch.txt")
for each_line in data:
try:
(role, line_spoken)=each_line.split(':', 1)
line_spoken=line_spoken.strip()
if role=='Man':
man.append(line_spoken)
elif role=='Other Man':
other.append(line_spoken)
except ValueError:
pass
data.close()
except IOError:
print('The datafile is missing!')
try:
man_file=open('man.txt', 'w') #以w模式访问文件man.txt
other_file=open('other.txt','w') #以w模式访问文件other.txt
print (man, file=man_file) #将列表man的内容写到文件中
print (other, file=other_file)
except IOError:
print ('File error')










