Review Python (conditional judgment, looping, string formatting)

1. Condition Judgment:

There is only one

If

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Elif: #多个条件加elif, want to add a few plus a few

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Else

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Python is indented to represent the statement block, see the colon, the downside is to indent

2. Circulation

Two types, for and while

For I in Rangle (): #想循环几次, write a few

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While * * *: #while循环必须有计数器

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3. String formatting

Username = input (' Please enter your name: ')
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Example 1. username+ ', welcome, ' + ' time is: ' +time

Example 2. ' %s Hello '%name

Example 3. ' %s, Hello, today's date is%s '% (name,time)

Example 4. ' {}, Hello, today's date is {} '. Format (name,time)

Example 5. ' {name}, hello, today's date is {time} '. Format (name=name,time =xxxx) #可以直接指定

Review Python (conditional judgment, looping, string formatting)