"""
1、打开文件: open() ,参数是文件的名称
"""
# 读取整个文件
with open('china.txt') as file_object:
	contents = file_object.read()
	print(contents)
	# rstrip() 去除文本末尾空行
	print(contents.rstrip())

print('==================')
# 逐行读取
filename = 'china.txt'

with open(filename) as file_object:
	print(file_object)
	for line in file_object:
		# 文件中的换行符也会读取出来
		print(line)

print('==================')

# 创建一个包含文件各行内容的列表
# readlines() 表示读取文件中的每一行并将其储存在列表中
with open(filename) as file_object:
	lines = file_object.readlines()

for line in lines:
	print(line.rstrip())
print('==================')
# 简单实用文件的内容
with open(filename) as file_object:
	lines = file_object.readlines()

c_str = ''
for line in lines:
	c_str += line.rstrip()

print(c_str)
print(len(c_str))