Python File writable()用法及代碼示例

文件 writable() 方法

writable() 方法是 Python 的內置方法，用於檢查文件流在 Python 中是否可寫？

用法:

    file_object.writable()

參數：

• 它不接受任何參數。

返回值：

這個方法的返回類型是<class 'bool'>, 如果文件流可寫則返回 True ，如果文件不可寫則返回 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()

輸出

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