• Format Specification Review for Strings
• String Review
• Regular Expressions

See - Strings Review

• How to partition a string? when is this useful? What's the difference of partition from a split?
• What is the use of reversed keyword on a list?
• How to append a comma after every element of the number "0 1 2 4 5"?
• What are character testing methods in string class?
• How to format a money value with comma?

See - Regex Practice

• How to use the re module in python, what are the commonly used functions?
• How to find exact match?
• What is the difference between search and match functions?
• What are the regex meta-character classes?
• How to perform substitution actions using regex functions? How to make it selective?
• Can regex module be used to search case-insensitive? What's given along with the search expression to achieve this?
• Why is findall used?
• What is the difference between findall and finditer
• how to capture subgroups in regex?

See - Pandas RegEx

• data munging = data cleaning
• Two common operations: data cleaning, data transformation
• Can RegEx be used in pandas Series? What is the difference between match and contains?
• How to apply regex on dataframes to replace a column with different format?

see - Files Review

• What is the use of with statement in resource management? Can it only be used with files?
• How to create a new file and append data in python?
• What is the use of sys module in python?
• How to remove a file in python from disk? On the same line, how to rename a file?
• what is the difference using readlines in python vs using an iterator to read one line at a time?
• What is the difference using split(" ") vs split() default while splitting a line?
• What are the file open modes in python ? (Hint - There are six of them)

See - JSON Review

• What is the difference between json.dump() and json.dumps() method?
• What is the use of json.load?
• How to pretty-print contents of a file containing json objects?

• csv module is used, many libraries also support CSV processing
• How to read and write to csv using this module?
• How to create csv from pandas dataframes, how to read a csv file into pandas dataframe?