Example 1: enumerate in python
languages = ['Python', 'C', 'C++', 'C#', 'Java']
#Bad way
i = 0 #counter variable
for language in languages:
print(i, language)
i+=1
#Good Way
for i, language in enumerate(languages):
print(i, language)
Example 2: enumerate python
for index,subj in enumerate(subjects):
print(index,subj) ## enumerate will fetch the index
0 Statistics
1 Artificial intelligence
2 Biology
3 Commerce
4 Science
5 Maths
Example 3: enumerate python
for index,char in enumerate("abcdef"):
print("{}-->{}".format(index,char))
0-->a
1-->b
2-->c
3-->d
4-->e
5-->f
Example 4: python enumerate for loop
presidents = ["Washington", "Adams", "Jefferson", "Madison", "Monroe", "Adams", "Jackson"]
for num, name in enumerate(presidents, start=1):
print("President {}: {}".format(num, name))
Example 5: for enumerate python
for key, value in enumerate(["p", "y", "t", "h", "o", "n"]):
print key, value
"""
0 p
1 y
2 t
3 h
4 o
5 n
"""
Example 6: enumerate
categorical_features_new=[features for features in df.columns if df[features].dtypes=='object']
for feature in categorical_features_new:
labels_sorted=df[feature].value_counts().sort_values().index
labels_ordered={k:i for i,k in enumerate(labels_sorted,0)}
df[feature]=df[feature].map(labels_ordered)