
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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python only***
define the following functions;
Function 1. writeStringToFile(fileName, text): This function overwrites the contents of the file named fileName with the string text.
Must
Define writeStringToFile
Use def to define writeStringToFile
Within the definition of writeStringToFile, use open(___) or open(___, ___=_) in at least one place.
Within the definition of writeStringToFile, use _.write(_) in exactly one place.
Function 2. readFirstLines(fileName, numLines): This function reads the first numLines lines of the file named fileName, returning them as a list of strings (each of which includes a terminating newline character, if there is one). If there are fewer than numLines lines in the file, returns a list of all the lines in the file.
Define readFirstLines
Use def to define readFirstLines
Within the definition of readFirstLines, use open(___) or open(___, ___=_) in at least one place.
Within the definition of readFirstLines, use return _ in at least one place.
Within the definition of readFirstLines, use _.readline() in exactly one place.
Within the definition of readFirstLines, use any kind of loop in at least one place.
Function 3. writeLines(fileName, stringList): This function writes all the strings in stringList as separate lines in the file named fileName by adding a newline character after each one. It overwrites any previons contents of the file.
Define writeLines
Use def to define writeLines
Within the definition of writeLines, use open(___) or open(___, ___=_)in at least one place.
Within the definition of writeLines, use _.write(_) in exactly one place.
Use a open file expression
Use a file .write() call
Define writeLines
Use def to define writeLines
Within the definition of writeLines, use open(___) or open(___, ___=_)in at least one place.
Within the definition of writeLines, use _.write(_) in exactly one place.
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