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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PEP-8, the python style guide recommends a maximum line length of 79. There are a number of scenarios where overly wide code can be problematic: When you want to read code on a smaller device When you are comparing files side by side When you are sharing your screen with a group or presenting code When a larger font size is needed for better readability The 79 character line width in PEP-8 is actually 80 or 81, as the number does not account for the \n or \r\n\ characters. Write a function length_correct(fname, length) that takes in a string and an integer, and returns None. fname will be a name of a file stored as a string, and length will be the max length of any line in the file. You may assume for this problem that the filename given is a real file in the same folder as hw08.py. The function should produce a new file "mod-<fname>" (where <fname> is replaced by the value of fname). This new file should contain the same content of "fname" but modified in the following way: ● Each line of the file in fname which has a length less than or equal to length should be written unmodified to the new file. If a line has a length of greater than length, that line should be written as two separate lines in the modified file, with length - 1 characters appearing on the first line and ending with a \n character, and the remaining characters on the line below it. • If the remaining characters also have a length greater than length, you need to split that line as well. ● This process continues until the remaining characters can fit into one line.
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Transcribed Image Text:PEP-8, the python style guide recommends a maximum line length of 79. There are a number of scenarios where overly wide code can be problematic: When you want to read code on a smaller device When you are comparing files side by side When you are sharing your screen with a group or presenting code When a larger font size is needed for better readability The 79 character line width in PEP-8 is actually 80 or 81, as the number does not account for the \n or \r\n\ characters. Write a function length_correct(fname, length) that takes in a string and an integer, and returns None. fname will be a name of a file stored as a string, and length will be the max length of any line in the file. You may assume for this problem that the filename given is a real file in the same folder as hw08.py. The function should produce a new file "mod-<fname>" (where <fname> is replaced by the value of fname). This new file should contain the same content of "fname" but modified in the following way: ● Each line of the file in fname which has a length less than or equal to length should be written unmodified to the new file. If a line has a length of greater than length, that line should be written as two separate lines in the modified file, with length - 1 characters appearing on the first line and ending with a \n character, and the remaining characters on the line below it. • If the remaining characters also have a length greater than length, you need to split that line as well. ● This process continues until the remaining characters can fit into one line.
This means the modified file will have a line count greater than or equal to the original file. For example, with a length of 30 and a file called sorc.txt with the single following line: Mr. and Mrs. Dursley of number four, Privet Drive the output file would be called mod-sorc.txt and would contain two lines: Mr. and Mrs. Dursley of numbe r four, Privet Drive
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Transcribed Image Text:This means the modified file will have a line count greater than or equal to the original file. For example, with a length of 30 and a file called sorc.txt with the single following line: Mr. and Mrs. Dursley of number four, Privet Drive the output file would be called mod-sorc.txt and would contain two lines: Mr. and Mrs. Dursley of numbe r four, Privet Drive
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