python文件读写

try:f = open('C:/Users/34810/Desktop/test.txt', 'r')print(f.read())
finally:if f:f.close()
# 简略写法
with open('C:/Users/34810/Desktop/test.txt', encoding='utf-8') as f:# readline()只读取一行print(f.readline())print(f.readlines(), 9999)# read()读取全部，如果文件太多会爆内存print(f.read())# 限制读取大小print(f.read(10))