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Consider this:
from datetime import datetime
now = datetime.now()
now.strftime("%p") # returns 'PM'
'{0.day}'.format(now) # returns 22
'{0.strftime("%p")}'.format(now)
# gives
# AttributeError: 'datetime.datetime' object has no attribute 'strftime("%p")'
This seems to imply that I can't call a class method inside the format (I guess that's what strftime is).
What's a workaround for this (assuming I need to call the method inside the string, and keep using a format) ?
965
There are two methods to call a function from string stored in a variable. The first one is by using the window object method and the second one is by using eval() method. The eval() method is older and it is deprecated.
Python f-strings enables us to call functions within it.
In java, String format() method returns a formatted string using the given locale, specified format string, and arguments. We can concatenate the strings using this method and at the same time, we can format the output concatenated string. Parameter: The locale value to be applied on the format() method.
This is the way to go. Use an existing parser to parse your string and then have it fill in the variables within a function object. If it's a complete function, then you'll have to get a more powerful parser. Bingo, like PIL's 'tostring' and 'fromstring' methods, liking yamls object creation as well it seems fun.
However, when calling the String.Format method, it is not necessary to focus on the particular overload that you want to call. Instead, you can call the method with an object that provides culture-sensitive or custom formatting and a composite format string that includes one or more format items.
public class Main { static void myMethod() { System.out.println("Hello World!"); } } myMethod () prints a text (the action), when it is called. To call a method, write the method's name followed by two parentheses () and a semicolon; Inside main, call myMethod ():
Java String format () The java string format () method returns the formatted string by given locale, format and arguments. If you don't specify the locale in String.format () method, it uses default locale by calling Locale.getDefault () method. The format () method of java language is like sprintf () function in c language and printf () ...
To call a method in Java, write the method name followed by a set of parentheses (), followed by a semicolon (;). A class must have a matching filename (Car and Car.java).
You could do this.
>>> from datetime import datetime
>>> now = datetime.now()
>>> '{0:%p}'.format(now)
'PM'
This will also work with f-strings.
>>> f"{now:%p}"
'PM'
You can use the f-string:
from datetime import datetime
now = datetime.now()
now.strftime("%p") # returns 'PM'
'{0.day}'.format(now) # returns 22
print(f'{now.strftime("%p")}')
Else:
from datetime import datetime
now = datetime.now()
now.strftime("%p") # returns 'PM'
'{0.day}'.format(now) # returns 22
print('{0:%p}'.format(now))
Documentation
2
You could use f-strings like this:
from datetime import datetime
now = datetime.now()
now.strftime("%p")
print(f'{now.day}')
print(f'{now.strftime("%p")}')
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