【Python】字符串 ② ( 字符串拼接 | 字符串与非字符串不能直接拼接 | TypeError: can only concatenate str (not “int“) to str )

"Tom" + " 19"

	# 字面量 与 变量 拼接
	name = "Tom "
	print(name + "19")

	# 变量 与 变量 拼接
	name = "Tom "
	age = "19"
	print(name + age)

# 字面量 与 字面量 拼接
print("Tom" + " 19")

# 字面量 与 变量 拼接
name = "Tom "
print(name + "19")

# 变量 与 变量 拼接
name = "Tom "
age = "19"
print(name + age)

Tom 19
Tom 19
Tom 19

# 字符串变量 与 数字拼接
name = "Tom"
print(name + 18)

Traceback (most recent call last):
  File "Y:\002_WorkSpace\PycharmProjects\HelloPython\hello.py", line 3, in <module>
    print(name + 18)
TypeError: can only concatenate str (not "int") to str

Process finished with exit code 1