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Learn Python from Scratch

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You've already met with strings in the very first exercises. String - is simply a text which can contain letters, symbols, numbers, and so on. The one requirement - is to put your text inside quotes 'text' or "text" or '''text'''. The number of quotes on the left side must be equal to the number of quotes on the right side.

To convert a variable into a string use the str function or place your text inside quotes. It's useful if you, for example, need to make Python understand that 3 is string, not number (by default, Python will assign 3 as int).

For example, let's create a string with only the number 23

# first way to create string
string1 = '23'
print(type(string1))
# second way to create string
string2 = 23
print(type(string2))
# convert it into string type
string2 = str(string2)
print(type(string2))
123456789
# first way to create string string1 = '23' print(type(string1)) # second way to create string string2 = 23 print(type(string2)) # convert it into string type string2 = str(string2) print(type(string2))
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Given a math expression assigned to variables expr1 and expr2. Not changing expr1, convert expr2 by using quotes, and print its value.

Lösning

# variable expr1 and its value
expr1 = 1700/19
print("The value of expr1:", expr1)

# variable expr2
expr2 = "1700/19"
print("The value of converted into string expr2:", expr2)

Var allt tydligt?

Hur kan vi förbättra det?

Tack för dina kommentarer!

Avsnitt 3. Kapitel 4
single

single

# variable expr1 and its value
expr1 = 1700/19
print("The value of expr1:", expr1)

# variable expr2
expr2 = _1700/19_
print("The value of converted into string expr2:", _ _ _)

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