elem_1 = ['Hydrogen', 'Helium']
elem_2 = ['Lithium', 'Beryllium', 'Boron', 'Carbon', 'Nitrogen', 'Oxygen', 'Fluorine', 'Neon']
elem_3 = ['Sodium', 'Magnesium', 'Aluminum', 'Silicon', 'Phosphorus', 'Sulfur', 'Chlorine',
'Argon']
print("Row 1:" elem_1)
print("Row 2:" elem_2)
print("Row 3:" elem_3)
Right now it gives TypeError: can only concatenate str (not "list") to str
I want the output to look like this:
Row 1: Hydrogen, Helium
Row 2: Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, Neon
Row 3: Sodium, Magnesium, Aluminum, Silicon, Phosphorus, Sulfur, Chlorine, Argon
CodePudding user response：
Use join
print("Row 1: " ', '.join(elem_1))
print("Row 2: " ', '.join(elem_2))
print("Row 3: " ', '.join(elem_3))
From the docs:
str.join(iterable)
Return a string which is the concatenation of the strings in iterable.
CodePudding user response：
In versions of python 3.6 and higher you can use f-strings. Then you can evaluate code within curly brackets
print(f"Row 1: {','.join(elem_1)}")
Other types of string interpolation can be found in