那么在 Ruby 中,我可以做如下操作:
testsite_array = Array.new
y=0
File.open('topsites.txt').each do |line|
testsite_array[y] = line
y=y+1
end
用Python应该如何实现这个功能呢?
testsite_array = []
with open('topsites.txt') as my_file:
for line in my_file:
testsite_array.append(line)
这是可能的,因为Python允许您直接迭代文件。
或者,更简单的方法是使用f.readlines()
:
with open('topsites.txt') as my_file:
testsite_array = my_file.readlines()
只需打开文件并使用 readlines()
函数:
with open('topsites.txt') as file:
array = file.readlines()
在Python中,您可以使用文件对象的readlines
方法。
with open('topsites.txt') as f:
testsite_array=f.readlines()
或者只是使用list
,这与使用readlines
相同,但唯一的区别是我们可以传递一个可选的大小参数给readlines
:
with open('topsites.txt') as f:
testsite_array=list(f)
关于file.readlines
的帮助:
In [46]: file.readlines?
Type: method_descriptor
String Form:<method 'readlines' of 'file' objects>
Namespace: Python builtin
Docstring:
readlines([size]) -> list of strings, each a line from the file.
Call readline() repeatedly and return a list of the lines so read.
The optional size argument, if given, is an approximate bound on the
total number of bytes in the lines returned.