Do you need to put quotes in python when outputting numbers?

Python has two ways to output values: expression statements and print() function.

The third way is to use the write() method of the file object. The standard output file can be referenced with sys.stdout.

#If you want the output to be more diverse, you can use the str.format() function to format the output value.

If you want to convert the output value into a string, you can use the repr() or str() function to achieve this.

str(): The function returns a user-readable expression.

repr(): Produce an expression that is readable by the interpreter.

Example:

a=3
print ("'%s'"%(a))  ##方法1  %s为格式化字符串,然后将a传递进去，就变成了'3'
print("'{}'".format(a))  ##方法2  format函数用于字符串的格式化，原理同上

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