Python File writable()用法及代码示例

文件 writable() 方法

writable() 方法是 Python 的内置方法，用于检查文件流在 Python 中是否可写？

用法:

    file_object.writable()

参数：

• 它不接受任何参数。

返回值：

这个方法的返回类型是<class 'bool'>, 如果文件流可写则返回 True ，如果文件不可写则返回 False 。

例：

# Python File writable() Method with Example

# creating a file
myfile1 = open("hello1.txt", "w")

# checking whethet the file stream is 
# writable or not
print("myfile1.writable():", myfile1.writable())

# closing the file
myfile1.close()

# opening file in read mode
myfile1 = open("hello1.txt", "r")

# checking whethet the file stream is 
# writable or not
print("myfile1.writable():", myfile1.writable())

# closing the file
myfile1.close()

输出

myfile1.writable():True
myfile1.writable():False