Five a day

We have a list with the food servings that takes a person in a determined period of time (food list). This food list is a nested list of sublists and each sublist has two elements: the food name and its number of servings.

1. Write the function nutrition1() that given a food list, returns the total number of servings of fruit and vegetables in the list.

   Save this function into a file named nutrition1.py. Examples:

   >>> nutrition1([['bread', 2], ['meat', 1], ['milk', 3], 
   ... ['bread', 3], ['vegetable', 5], ['meat', 1], ['fruit', 2],
   ... ['milk', 1], ['fruit', 3], ['bread', 2], ['vegetable', 3],
   ... ['fruit', 2], ['meat', 1]])
   15
   

   Note

   More tests are provided in file nutrition1.txt

2. Write the function nutrition2() that takes a food list, food, and a number of servings, nr, and returns True if the person has eaten more than nr servings of fruit and vegetables (in total) and False otherwise.

   Save this function into a file named nutrition2.py. Examples:

   >>> nutrition2([['bread', 2], ['meat', 1], ['milk', 3], 
   ... ['bread', 3], ['vegetable', 5], ['meat', 1], ['fruit', 2],
   ... ['milk', 1], ['fruit', 3], ['bread', 2], ['vegetable', 3],
   ... ['fruit', 2], ['meat', 1]], 9)
   True
   
   

   Note

   More tests are provided in the nutrition2.txt

3. He have another nested list of sublists with data corresponding to several weeks (week list). Each sublist of a week list represents a week and has 7 integers. These integers correspond to the number of fruit and vegetables servings (in total) eaten by the person each day of the week. The main list has an undefined number of sublists.

   Write the function nutrition3() that from a week list, week, and a number of servings, nr, returns the number of weeks where there is a day in which the number of fruit and vegetables servings (in total) is lower than nr.

   Save this function into a file named nutrition3.py. Examples:

   >>> nutrition3([[3, 6, 7, 4, 5, 7, 1], [6, 6, 6, 6, 7, 7, 5],
   ... [5, 6, 6, 6, 6, 6, 6], [5, 5, 5, 5, 5, 5, 3]], 5)
   2
   

   Note

   More tests are provided in the nutrition3.txt

Solution

A solution of these functions is provided in files nutrition1.py, nutrition2.py, nutrition3.py