Python: Print subject name and marks in order of its first occurrence
Python Collections: Exercise-6 with Solution
Write a Python program that accepts number of subjects, subject names and marks. Input number of subjects and then subject name, marks separated by a space in next line. Print subject name and marks in order of its first occurrence.
Sample Solution:
Python Code:
import collections, re
n = int(input("Number of subjects: "))
item_order = collections.OrderedDict()
for i in range(n):
sub_marks_list = re.split(r'(\d+)$',input("Input Subject name and marks: ").strip())
subject_name = sub_marks_list[0]
item_price = int(sub_marks_list[1])
if subject_name not in item_order:
item_order[subject_name]=item_price
else:
item_order[subject_name]=item_order[subject_name]+item_price
for i in item_order:
print(i+str(item_order[i]))
Sample Output:
Powered by Number of subjects: 3 Input Subject name and marks: Bengali 58 Input Subject name and marks: English 62 Input Subject name and marks: Math 68 Bengali 58 English 62 Math 68
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Previous: Write a Python program that accept some words and count the number of distinct words. Print the number of distinct words and number of occurrences for each distinct word according to their appearance.
Next: Write a Python program to create a deque and append few elements to the left and right, then remove some elements from the left, right sides and reverse the deque.
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Python: Tips of the Day
Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
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