我有这个 .py 文件:
from sys import argv
script, filename = argv
print "We're going to erase %r." % filename
print "If you don't want that, hit CTRL-C (^C)."
print "If you do want that, hit RETURN."
raw_input("?")
print "Opening the file..."
target = open(filename, 'w')
print "Truncating the file. Goodbye!"
target.truncate()
print "Now I'm going to ask you for three lines."
line1 = raw_input("line 1: ")
line2 = raw_input("line 2: ")
line3 = raw_input("line 3: ")
print "I'm going to write these to the file."
target.write(line1)
target.write("\n")
target.write(line2)
target.write("\n")
target.write(line3)
target.write("\n")
print "And finally, we close it."
target.close()
我不明白的是:
a)为什么在解释器中如果我写,raw_input("?")
然后输入f
并按回车,它会输出'f'
字符串,如果我运行 .py 文件它不会返回'f'字符串?
b)另外,python 文档说:“该函数然后从输入中读取一行,将其转换为字符串(剥离尾随换行符),然后返回它。那么,为什么第 7 行打印在新行而不是行上6("?Opening the file..."). 这是\n
从哪里来的?