Day086 — what I learn in a python project

log exception

logging exceptions in Python 3

check if string is None and empty

bool(“”) and bool(None) are False

bool(“ “) is True, use .strip()

How to check if the string is empty?

can use csv.QUOTE_NONE to avoid any quoting for csv.reader. Otherwise, by default, it will treat what inside an open and close quote as one string. It includes multiple lines of content as a value of one column.

csv - CSV File Reading and Writing - Python 3.7.4rc1 documentation

Commas and double-quotes in CSV files

Python parse CSV ignoring comma with double-quotes

match for a specific pattern

Check if string matches pattern

Python Regex: re.match(), re.search(), re.findall() with Example

handle “Line contains NULL byte” error when using CSV reader

reader = csv.reader(x.replace(‘\0’, ‘’) for x in mycsv)

"Line contains NULL byte" in CSV reader (Python)

be care before adding new value to dict, it is best to use .copy() before adding new object to it. Same goes to array. Don’t loop an array and modify its item in that loop. It is not safe.

How to copy a dictionary and only edit the copy