type() function doesn't work when used in a python script file

Question

I wrote a program of two lines in python. At first I tested it in the python shell. Here it is:

>>>state=True
>>>type(state)
<class 'bool'>

The output was as I expected in the shell. And then I wrote these instructions in a file named main.py.

#---------------main.py----------------#
state=True
type(state)

Then I executed this program using linux terminal as root user. The output was nothing

[manjaro ~]# python main.py
[manjaro ~]#

I expected that the output would be as it was in the shell. As a beginner In python I don't know why there was no output. Please help me to understand why there was no output.

You can take a look at the answers in the dupe - together with KAsramds answer this should clairfy things. if not, ask by comment — Patrick Artner
– Patrick Artner, Commented Apr 29, 2018 at 12:49
The interactive shell is a Read–Eval–Print Loop. Printing is automatic in the shell. You may need to use the print() function in a Python script to display output. Advise you read the Python Tutorial to learn the basics of the language. — michael_heath
– michael_heath, Commented Apr 29, 2018 at 14:45

Kasravnd · Accepted Answer · 2018-04-29 12:44:17Z

4

What you see is the raw representation of the object which is returned by __repr__ method of the respective object. It's what is called when you type an object in Python's interactive shell. When you're in a file you need to print the result using print function that triggers the __str__ method.

state=True
print(type(state))

answered Apr 29, 2018 at 12:44

Kasravnd

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2 Comments

Hash Over a year ago

can you please explain more about repr method and str please. I want to learn more about them from you. because unlike some awkard articles, You explained them clearly and neatly. Can you please tell more about them Please sir I request you! hope some help from you

Kasravnd Over a year ago

@user9218974 Well, __str__ and __repr__ are not such complicated methods. The documentation has already explained their functionality clearly docs.python.org/3/reference/datamodel.html#object.__str__. Please check the documentation and let me know if you had any further questions.

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