Use format() method to formatting a float number. Here are 2 ways to print format float in Python.
pi = 3.14159
print(" pi = %1.2f " % pi) # old
print(" pi = {:.2f}".format( pi )) # newPython print format float Example
Simple example code use str.format() to print the float with two decimal places.
The {} is the placeholder for substituted variables. If no format is specified, it will insert and format as a string.
pi = 3.1415926
precision = 2
print("{:.{}f}".format(pi, precision))
Output:
Number Formatting
The following table shows various ways to format numbers using Python’s
| Number | Format | Output | Description |
|---|---|---|---|
| 3.1415926 | {:.2f} | 3.14 | Format float 2 decimal places |
| 3.1415926 | {:+.2f} | +3.14 | Format float 2 decimal places with sign |
| -1 | {:+.2f} | -1.00 | Format float 2 decimal places with sign |
| 2.71828 | {:.0f} | 3 | Format float with no decimal places |
| 5 | {:0>2d} | 05 | Pad number with zeros (left padding, width 2) |
| 5 | {:x<4d} | 5xxx | Pad number with x’s (right padding, width 4) |
| 10 | {:x<4d} | 10xx | Pad number with x’s (right padding, width 4) |
| 1000000 | {:,} | 1,000,000 | Number format with comma separator |
| 0.25 | {:.2%} | 25.00% | Format percentage |
| 1000000000 | {:.2e} | 1.00e+09 | Exponent notation |
| 13 | {:10d} | 13 | Right aligned (default, width 10) |
| 13 | {:<10d} | 13 | Left aligned (width 10) |
| 13 | {:^10d} | 13 | Center aligned (width 10) |
Do comment if you have any doubts and suggestions on this Python float topic.
Note: IDE: PyCharm 2021.3.3 (Community Edition)
Windows 10
Python 3.10.1
All Python Examples are in Python 3, so Maybe its different from python 2 or upgraded versions.