Slice Age in Python

ByAnurag batra July 24, 2022June 30, 2022

>>> pd.cut(np.array([.2, 1.4, 2.5, 6.2, 9.7, 2.1]), 3, retbins=True)
([(0.191, 3.367], (0.191, 3.367], (0.191, 3.367], (3.367, 6.533], (6.533, 9.7], (0.191, 3.367]]
Categories (3, object): [(0.191, 3.367] < (3.367, 6.533] < (6.533, 9.7]],
array([ 0.1905    ,  3.36666667,  6.53333333,  9.7       ]))
>>> pd.cut(np.array([.2, 1.4, 2.5, 6.2, 9.7, 2.1]), 3, labels=["good","medium","bad"])
[good, good, good, medium, bad, good]
Categories (3, object): [good < medium < bad]
>>> pd.cut(np.ones(5), 4, labels=False)
array([1, 1, 1, 1, 1], dtype=int64)

Here is what the above code is Doing:
1. pd.cut(np.array([.2, 1.4, 2.5, 6.2, 9.7, 2.1]), 3, retbins=True)
– This is creating an array of numbers and then cutting them into 3 bins.
– The retbins=True is returning the bins that were created.
2. pd.cut(np.array([.2, 1.4, 2.5, 6.2, 9.7, 2.1]), 3, labels=[“good”,”medium”,”bad”])
– This is creating an array of numbers and then cutting them into 3 bins.
– The labels=[“good”,”medium”,”bad”] is labeling the bins.
3. pd.cut(np.ones(5), 4, labels=False)
– This is creating an array of ones and then cutting them into 4 bins.
– The labels=False is not labeling the bins.

moving element to last position in a list python

Python Examples

moving element to last position in a list python

ByAnurag batra June 27, 2022May 21, 2022

list = [item, item1, item2…] list.insert(len(list), other_item) #For results just print the list, it should work… #Also courtesy of Stack Overflow Here is what the above code is Doing: 1. It’s creating a list of all the items in the list. 2. It’s inserting the other item at the end of the list. 3. It’s…

Python Examples

python join list to string

ByAnurag batra April 11, 2022April 11, 2022

>>> sentence = [‘this’,’is’,’a’,’sentence’] >>> ‘-‘.join(sentence) ‘this-is-a-sentence’ Here is what the above code is Doing: 1. We create a list of strings called sentence. 2. We use the join() method to concatenate the strings in the list, using a hyphen as the separator. 3. We print the resulting string. The join() method is useful when…

Python Examples

polymorphism in python

ByAnurag batra June 17, 2022May 20, 2022

# Python program to demonstrate in-built poly- # morphic functions # len() being used for a string print(len(“geeks”)) # len() being used for a list print(len([10, 20, 30])) Here is what the above code is Doing: 1. The first print statement calls the len() function on a string. 2. The second print statement calls the…

SQL Query to Join Two Tables Based Off Closest Timestamp

Python Examples

SQL Query to Join Two Tables Based Off Closest Timestamp

ByAnurag batra June 13, 2022May 20, 2022

SELECT case.id, case.resolution, case.timestamp, class.value FROM closed_cases AS case LEFT JOIN (select c.*, (select min(timestamp) from classifications c1 where c1.timestamp > c.timestamp) timeend from classifications c) AS class ON case.timestamp >= class.timestamp and (case.timestamp < class.timeend or class.timeend IS NULL) WHERE case.timestamp BETWEEN $1 AND $2; Here is what the above code is Doing: 1....

Python Examples

pandas concat and reset index

ByAnurag batra April 20, 2022April 14, 2022

train_df = pd.concat(train_class_df_list, ignore_index=True) Here is what the above code is Doing: 1. We create a list of DataFrames, one for each class. 2. We concatenate all the DataFrames into one big DataFrame. 3. We shuffle the DataFrame so that the order of the images is random. 4. We split the DataFrame into a training…

AttributeError: module ‘tensorflow’ has no attribute ‘random_normal’

Python Examples

AttributeError: module ‘tensorflow’ has no attribute ‘random_normal’

ByAnurag batra May 28, 2022May 20, 2022

It was moved to tf.random.normal (along with all the other tf.random_* functions) Here is what the above code is Doing: 1. Creating a random normal distribution with mean = 0 and std = 1 2. Creating a random uniform distribution with low = -1 and high = 1 3. Creating a random uniform distribution with…

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