Python for loop is basically used to execute a sequence of code multiple times.
Python for Loop Syntax
Here is the general form to use for loop in python:
for iterating-var in sequence:
statement(s)
Here, if the sequence contains an expression list, then it is evaluated first. And the first item in the sequence is assigned to the
iterating variable, that is, iterating-var. Next, the statement(s) block is executed. Here, each item in the list is assigned to the
iterating-var, and the statement(s) block is executed until the entire sequence is completed or exhausted.
Python for Loop Example
Here is an example program, illustrates the concept and use of for loop in python:
# Python for Loop - Example Program
for letter in 'python':
print("The current letter is ", letter);
Here is the sample run of the above python program:
Here is another program, also demonstrates the use of python for loop. This program uses the range() function to return a list of consecutive
integers. The range() function can have one, two, or three parameters/arguments. The range() function must have at least one parameters.
# Python for Loop - Example Program
for val in range(10):
print(val)
Here is the output produced by the above python program:
Here is one more example, also illustrates for loop in python:
# Python for Loop - Example Program
for val in range(10, 20):
print(val)
Below is the output of the above python program:
More Examples
Here are the list of some more examples on python for loop:
Python Online Test
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