for-loops

for <loop variable> in <sequence>:
       <loop body>

Performs the loop body for every element of the sequence.

Components:

loop variable : variable

Variable that will take on the value of every element in the sequence at some point in the loop. Any valid variable is acceptable.

sequence : iterable object

e.g. Arrays, Lists, Strings

loop body :

Code to be executed for every element in sequence.

Results:

Output of loop body

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pets

Index	ID	Species	Age	Weight
0	dog_001	dog	5	40
1	cat_001	cat	0.2	1.5
2	cat_002	cat	9	15
3	dog_002	dog	2	80
4	dog_003	dog	0.5	25
5	ham_001	hamster	3	1
6	ham_002	hamster	0.2	0.25
7	cat_003	cat	0	10

for i in np.arange(pets.shape[0]):
    chosen_pet = pets.iloc[i]
    pet_id = chosen_pet.get('ID')
    species = chosen_pet.get('Species')
    age = chosen_pet.get('Age')
    weight = chosen_pet.get('Weight')
    print("This is a " + species + " with pet id " + str(pet_id) +', age ' + str(age) +', and weight '+str(weight))

This is a dog with pet id dog_001, age 5.0, and weight 40.0
This is a cat with pet id cat_001, age 0.2, and weight 1.5
This is a cat with pet id cat_002, age 9.0, and weight 15.0
This is a dog with pet id dog_002, age 2.0, and weight 80.0
This is a dog with pet id dog_003, age 0.5, and weight 25.0
This is a hamster with pet id ham_001, age 3.0, and weight 1.0
This is a hamster with pet id ham_002, age 0.2, and weight 0.25
This is a cat with pet id cat_003, age 0.0, and weight 10.0