How to convert numbers to strings in python

How to convert numbers to strings in python: 1. Use formatted strings, statements such as "tt=322 tem='%d' %tt"; 2. Implement through the "str(5)" method Convert.

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Convert numbers to strings

Method 1:

Use format string:

tt=322
tem='%d' %tt

tem is the string converted by tt

Commonly used format string:

%d integer

%f%F floating point number

%e%E scientific notation

Abbreviation of %g%G e and %f/%E and %F

%% Output%

Format operator auxiliary instructions

Symbol function

* Define width or decimal point precision

- Used for left alignment

Display a plus sign ( ) before a positive number

40248cdb8ba3b8fe238e2ffa5e6e3cd8 Display a space before a positive number

# Display a zero ('0') before an octal number, in '0x' or '0X' is displayed in front of the hexadecimal number (depending on whether 'x' or 'X' is used)

0 The displayed number is filled with '0' instead of the default space

% '%%' outputs a single '%'

(var) mapping variable (dictionary parameter)

m.n m is the minimum total width displayed, n is after the decimal point Number of digits (if available)

Example:

'%f' % 1234.567890   输出：'1234.567890'
  
'%.2f' % 1234.567890  输出：'1234.57'

Method 2:

str(5)

Example:

>>> '10'+str(4)
'104'
>>> str='hello'
>>> '10'+str(4)
Traceback (most recent call last):
 File "", line 1, in 
  '10'+str(4)
TypeError: 'str' object is not callable
>>>

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