Regular Expressions 101

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"
[0-9]{1,}/2020/\w{0,}/SPV
"
gm
Match a single character present in the list below
[0-9]
{1,} matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
0-9 matches a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)
/2020/
matches the characters /2020/ literally (case sensitive)
\w
matches any word character (equivalent to [a-zA-Z0-9_])
{0,} matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
/SPV
matches the characters /SPV literally (case sensitive)
Global pattern flags
g modifier: global. All matches (don't return after first match)
m modifier: multi line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)
Your regular expression does not match the subject string.

Regular Expression
No Match

r"
"
gm

Test String