One-liner Python code for setting string to 0 string if empty
Question:
What is a one-liner code for setting a string in python to the string, 0 if the string is empty?
# line_parts[0] can be empty
# if so, set a to the string, 0
# one-liner solution should be part of the following line of code if possible
a = line_parts[0] ...
Answers:
a = '0' if not line_parts[0] else line_parts[0]
a = line_parts[0] or "0"
This is one of the nicest Python idioms, making it easy to provide default values. It’s often used like this for default values of functions:
def fn(arg1, arg2=None):
arg2 = arg2 or ["weird default value"]
If you would also like to consider the white spaces as empty and get the result stripping of those, the below code will help,
a = (line_parts[0] and line_parts[0].strip()) or "0"
What is a one-liner code for setting a string in python to the string, 0 if the string is empty?
# line_parts[0] can be empty
# if so, set a to the string, 0
# one-liner solution should be part of the following line of code if possible
a = line_parts[0] ...
a = '0' if not line_parts[0] else line_parts[0]
a = line_parts[0] or "0"
This is one of the nicest Python idioms, making it easy to provide default values. It’s often used like this for default values of functions:
def fn(arg1, arg2=None):
arg2 = arg2 or ["weird default value"]
If you would also like to consider the white spaces as empty and get the result stripping of those, the below code will help,
a = (line_parts[0] and line_parts[0].strip()) or "0"