将整数转换为字符串？

I want to convert an integer to a string in Python. I am typecasting it in vain:

d = 15
d.str()

When I try to convert it to string, it’s showing an error like int doesn’t have any attribute called str.

>>> str(10)
'10'
>>> int('10')
10

Links to the documentation:

• int()
• str()

Conversion to a string is done with the builtin str() function, which basically calls the __str__() method of its parameter.

Try this:

str(i)

There is not typecast and no type coercion in Python. You have to convert your variable in an explicit way.

To convert an object in string you use the str() function. It works with any object that has a method called __str__() defined. In fact

str(a)

is equivalent to

a.__str__()

The same if you want to convert something to int, float, etc.

To manage non-integer inputs:

number = raw_input()
try:
    value = int(number)
except ValueError:
    value = 0

>>> i = 5
>>> print "Hello, world the number is " + i
TypeError: must be str, not int
>>> s = str(i)
>>> print "Hello, world the number is " + s
Hello, world the number is 5

In Python => 3.6 you can use f formatting:

>>> int_value = 10
>>> f'{int_value}'
'10'
>>>

For Python 3.6 you can use the f-strings new feature to convert to string and it’s faster compared to str() function, it is used like that:

age = 45
strAge = f'{age}'

Python provides the str() function for that reason.

digit = 10
print(type(digit)) # will show <class 'int'>
convertedDigit= str(digit)
print(type(convertedDigit)) # will show <class 'str'>

For more detailed answer you can check this article: Converting Python Int to String and Python String to Int

The most decent way in my opinion is “.

i = 32   -->    `i` == '32'

Can use %s or .format

>>> "%s" % 10
'10'
>>>

(OR)

>>> '{}'.format(10)
'10'
>>>

For someone who wants to convert int to string in specific digits, the below method is recommended.

month = "{0:04d}".format(localtime[1])

For more details, you can refer to Stack Overflow question Display number with leading zeros.

With the introduction of f-strings in Python 3.6, this will also work:

f'{10}' == '10'

It is actually faster than calling str(), at the cost of readability.

In fact, it’s faster than %x string formatting and .format()!