Let a grade file be any file in the following format: Student Number, Grade 101029383,80 192736611,0 292833315,51 109800384, 100 Complete the function below such that it constructs and return a dictionary that maps student numbers to grades. def make_dictionary (file_name: str) -> Dict [str, int]: """Given the name of a grade file file_name, return a dictionary that maps student numbers to grades. Assuming "grades.txt" contains the four records in the example file above >>> d = make_dictionary ("grades.txt") >>> d["101029383"] 80 >>> d["292833315"] 51 >>> len (d) 4 ||||||

Let a grade file be any file in the following format: Student Number, Grade 101029383,80 192736611,0 292833315,51 109800384, 100 Complete the function below such that it constructs and return a dictionary that maps student numbers to grades. def make_dictionary (file_name: str) -> Dict [str, int]: """Given the name of a grade file file_name, return a dictionary that maps student numbers to grades. Assuming "grades.txt" contains the four records in the example file above >>> d = make_dictionary ("grades.txt") >>> d["101029383"] 80 >>> d["292833315"] 51 >>> len (d) 4 ||||||

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Let a grade file be any file in the following format:
Student Number, Grade
101029383,80
192736611,0
292833315,51
109800384, 100
Complete the function below such that it constructs and return a dictionary that maps student numbers
to grades.
def make_dictionary (file_name: str) -> Dict [str, int]:
"""Given the name of a grade file file_name, return a dictionary
that maps student numbers to grades.
Assuming "grades.txt" contains the four records in the example
file above
>>> d = make_dictionary ("grades.txt")
>>> d["101029383"]
80
>>> d["292833315"]
51
>>> len (d)
4
grade_file = open(file_name, "r")
grades = {}
for line in grade_file:
return grades

def lastname_dict (names: List [List[str]]) -> Dict [str, List[str]]:
"""Given a list of [last-name, first-name] entries, return a dictionary mapping
last-names to the list of first-names with that last-name.
>>> lastname_dict([ ["Universe", "Steven"], ["Universe", "Greg"], \
["Loot", "Mike"]])
{'Universe': ['Steven', 'Greg'], 'Loot': ['Mike']}
ans =
{}
for last_name, first_name in names:
if
else:
return ans

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