Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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[画像:### Using the Write Command in Python The write command is used to write content to a file in Python. Assume that we already have a file named `test.txt` in our working folder and that the file has the following text: > "Just because something doesn't do what you planned it to do doesn't mean it's useless." You write the code presented below to write content in the `test.txt` file: ```python fhandle = open("test.txt", "w") f.write("There is no substitute for hard work.") f.close() ## This command saves and closes the file. ``` #### Explanation of the Code: 1. `open("test.txt", "w")`: This line opens the file `test.txt` in write mode. If the file already exists, it will be overwritten. If it doesn't exist, a new file will be created. 2. `f.write("There is no substitute for hard work.")`: This line writes the string "There is no substitute for hard work." into the file. 3. `f.close()`: This line saves and closes the file. #### Question: What will be the content in the file when these three lines of code are executed? **Answer:** When the file `test.txt` is opened in write mode ("w"), the original content is erased before new content is written. Therefore, the content of the file after executing the code will be: > "There is no substitute for hard work."]
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Transcribed Image Text:### Using the Write Command in Python The write command is used to write content to a file in Python. Assume that we already have a file named `test.txt` in our working folder and that the file has the following text: > "Just because something doesn't do what you planned it to do doesn't mean it's useless." You write the code presented below to write content in the `test.txt` file: ```python fhandle = open("test.txt", "w") f.write("There is no substitute for hard work.") f.close() ## This command saves and closes the file. ``` #### Explanation of the Code: 1. `open("test.txt", "w")`: This line opens the file `test.txt` in write mode. If the file already exists, it will be overwritten. If it doesn't exist, a new file will be created. 2. `f.write("There is no substitute for hard work.")`: This line writes the string "There is no substitute for hard work." into the file. 3. `f.close()`: This line saves and closes the file. #### Question: What will be the content in the file when these three lines of code are executed? **Answer:** When the file `test.txt` is opened in write mode ("w"), the original content is erased before new content is written. Therefore, the content of the file after executing the code will be: > "There is no substitute for hard work."
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