基础DAY13-文件

文本文件

二进制文件

# 打开文件
file = open("README")
# 读取文件
text = file.read()
print(text)
# 关闭文件
file.close()

# 打开文件
try:
    file = open("README")
except Exception as result:
    print("%s" % result)
else:
    # 读取文件
    text = file.read()
    print(text)
    print("-"*50)
    # 读取文件后文件指针会改变
    text = file.read()
    print(text)
    # 关闭文件
    file.close()
finally:
    print("程序执行完毕")

# 打开
file_read = open("README")
file_write = open("README[复件]", "w")
# 读取
text = file_read.read()
# 写入
file_write.write(text)
# 关闭
file_read.close()
file_write.close()

# 打开文件
file = open("README")
# 读取文件
while True:
    text = file.readline()
    # 判断是否读取到内容
    if not text:
        break
    print(text)
# 关闭
file.close()

大文件复制

# 打开
file_read = open("README")
file_write = open("README[复件]", "w")
# 读取
while True:
    # 读取一行内容
    text = file_read.readline()
    # 判断是否读取到内容
    if not text:
        break
    # 写入
    file_write.write(text)
# 关闭
file_read.close()
file_write.close()