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How would I go about coding step 8 "try to return the int of your string. If it cannot, return np.nan" using Python?

How would I go about coding step 8 "try to return the int of your string. If it cannot, return np.nan" using Python?

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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How would I go about coding step 8 "try to return the int of your string. If it cannot, return np.nan" using Python?

Write a function named standardize_weight that takes in as input a string and returns an integer. The function will do the following (in the order specified): 1) convert all characters of the string into lowercase 2) strip the string of all leading and trailing whitespace 3) replace any occurences of 'Ibs' with " (remove it from the string) • 4) replace any occurences of 'Ib' with " (remove it from the string) 5) replace any occurences of 'pounds' with " (remove it from the string) • 6) If the string contains the substring 'kg', then: 6.1) replace 'kg' with " 6.2) strip the string of whitespace 6.3) cast the string into a float type using the function float() 6.4) multiply the resulting float by 2.2 (an approximate conversion of kilograms to pounds) 8) try to return the int of your string. If it cannot, return np.nan . I # YOUR CODE HERE def standardize_weight(weight): weight = weight.lower() weight %3D weight.strip() weight weight weight weight.replace('lbs', '') = weight.replace('lb', '') weight.replace('pounds', '') %3D %3D if 'kg' in weight: weight = weight.replace('kg', ') weight weight weight = weight * 2.2 %3D weight.strip() float(weight) %3D %3D I assert standardize_weight('34 lbs') == 34 assert standardize_weight('101 kg') == 222
Transcribed Image Text:Write a function named standardize_weight that takes in as input a string and returns an integer. The function will do the following (in the order specified): 1) convert all characters of the string into lowercase 2) strip the string of all leading and trailing whitespace 3) replace any occurences of 'Ibs' with " (remove it from the string) • 4) replace any occurences of 'Ib' with " (remove it from the string) 5) replace any occurences of 'pounds' with " (remove it from the string) • 6) If the string contains the substring 'kg', then: 6.1) replace 'kg' with " 6.2) strip the string of whitespace 6.3) cast the string into a float type using the function float() 6.4) multiply the resulting float by 2.2 (an approximate conversion of kilograms to pounds) 8) try to return the int of your string. If it cannot, return np.nan . I # YOUR CODE HERE def standardize_weight(weight): weight = weight.lower() weight %3D weight.strip() weight weight weight weight.replace('lbs', '') = weight.replace('lb', '') weight.replace('pounds', '') %3D %3D if 'kg' in weight: weight = weight.replace('kg', ') weight weight weight = weight * 2.2 %3D weight.strip() float(weight) %3D %3D I assert standardize_weight('34 lbs') == 34 assert standardize_weight('101 kg') == 222
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